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  • 51.
    Fredriksson, Hasse
    et al.
    Royal Institute of Technology.
    Svensson, Ingvar L
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning.
    Mechanism of Pore Formation in Metals1976Ingår i: Metallurgical and materials transactions. B, process metallurgy and materials processing science, ISSN 1073-5615, E-ISSN 1543-1916, s. 599-606Artikel i tidskrift (Refereegranskat)
  • 52.
    Fredriksson, Hasse
    et al.
    Royal Institute of Technology.
    Svensson, Ingvar L
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    On the Mechanism of Pore Formation in Metals1976Ingår i: Metallurgical and materials transactions. B, process metallurgy and materials processing science, ISSN 1073-5615, E-ISSN 1543-1916, Vol. 7, nr 4, s. 599-606Artikel i tidskrift (Refereegranskat)
  • 53.
    Fredriksson, Hasse
    et al.
    Royal Institute of Technology.
    Svensson, Ingvar L
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning.
    Strukturomvandling och svalningskrympning hos låglegerat gråjärn.1976Rapport (Övrigt vetenskapligt)
  • 54.
    Fredriksson, Hasse
    et al.
    Royal Institute of Technology.
    Svensson, Ingvar L
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning.
    Studium av stelningsförloppet hos rostfria Cr-Ni-Mo-Järnbaslegeringar1974Rapport (Övrig (populärvetenskap, debatt, mm))
  • 55.
    Ghasemi, Rohollah
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Material och tillverkning. Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Olofsson, Jakob
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Material och tillverkning. Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Jarfors, Anders E. W.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Material och tillverkning. Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Svensson, Ingvar L.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Material och tillverkning. Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Modelling and simulation of local mechanical properties of high silicon solution-strengthened ferritic CGI materialsManuskript (preprint) (Övrigt vetenskapligt)
  • 56.
    Ghasemi, Rohollah
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Material och tillverkning. Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Olofsson, Jakob
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Material och tillverkning. Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Jarfors, Anders E. W.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Material och tillverkning. Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Svensson, Ingvar L.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Material och tillverkning. Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Modelling and simulation of local mechanical properties of high silicon solution-strengthened ferritic compacted graphite iron2017Ingår i: International Journal of Cast Metals Research, ISSN 1364-0461, E-ISSN 1743-1336, Vol. 30, nr 3, s. 125-132Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This study focuses on the modelling and simulation of local mechanical properties of compacted graphite iron cast at different section thicknesses and three different levels of silicon, ranging from about 3.6% up to 4.6%. The relationship between tensile properties and microstructure is investigated using microstructural analysis and statistical evaluation. Models are generated using response surface methodology, which reveal that silicon level and nodularity mainly affect tensile strength and 0.2% offset yield strength, while Young′s modulus is primarily affected by nodularity. Increase in Si content improves both the yield and tensile strength, while reduces elongation to failure. Furthermore, mechanical properties enhance substantially in thinner section due to the high nodularity. The obtained models have been implemented into a casting process simulation, which enables prediction of local mechanical properties of castings with complex geometries. Very good agreement is observed between the measured and predicted microstructures and mechanical properties, particularly for thinner sections.

  • 57. Gonzaled, A
    et al.
    Svensson, Ingvar L
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning.
    Struktur och hårdhet i komponenter tillverkade i segjärn med varierande kiselhalt1991Rapport (Övrigt vetenskapligt)
  • 58.
    Holmgren, Daniel
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning.
    Diószegi, Attila
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning.
    Svensson, Ingvar L
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning.
    A lemezről a kompaktgrafitra való átmenet hatásai az öntöttvas hővezető képességére2007Ingår i: Kohászat, Hungarian Journal of Metallurgy, Vol. 140, nr 5Artikel i tidskrift (Refereegranskat)
  • 59.
    Holmgren, Daniel
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning.
    Diószegi, Attila
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Svensson, Ingvar L
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Effects of Carbon Content and Solidification Rate on the Thermal Conductivity of Grey Cast Iron2006Konferensbidrag (Refereegranskat)
  • 60. Holmgren, Daniel
    et al.
    Diószegi, Attila
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Svensson, Ingvar L
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Effects of carbon content and solidification rate on thermal conductivity of grey cast iron2007Ingår i: China Foundry, ISSN 1672-6421, Vol. 4, nr 3, s. 210-214Artikel i tidskrift (Övrigt vetenskapligt)
  • 61.
    Holmgren, Daniel
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning.
    Diószegi, Attila
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Svensson, Ingvar L
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Effects of carbon content and solidification rate on thermal conductivity of grey cast iron2008Ingår i: Tsinghua Science and Technology, ISSN 1007-0214, Vol. 13, nr 2, s. 170-176Artikel i tidskrift (Refereegranskat)
  • 62. Holmgren, Daniel
    et al.
    Diószegi, Attila
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Svensson, Ingvar L
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Effects of inoculation and solidification rate on the thermal conductivity of grey cast iron2007Ingår i: Foundry Trade Journal, ISSN 0015-9042, Vol. 180, nr 3642, s. 66-69Artikel i tidskrift (Övrigt vetenskapligt)
  • 63.
    Holmgren, Daniel
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning.
    Diószegi, Attila
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Svensson, Ingvar L
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Effects of Inoculation and Solidification Rate on the Thermal Conductivity of Grey Cast Iron2006Konferensbidrag (Övrigt vetenskapligt)
  • 64. Holmgren, Daniel
    et al.
    Diószegi, Attila
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Svensson, Ingvar L
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Effects of Inoculation and Solidification Rate on the Thermal Conductivity of Grey Cast Iron2006Ingår i: Giessereiforschung, ISSN 0046-5933, Vol. 58, nr 3, s. 12-17Artikel i tidskrift (Övrigt vetenskapligt)
  • 65.
    Holmgren, Daniel
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning.
    Diószegi, Attila
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Svensson, Ingvar L
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Parameters Influencing the Temperature Distribution in Cast Iron Cylinder Heads Operating at Elevated Temperatures2006Konferensbidrag (Refereegranskat)
  • 66.
    Holmgren, Daniel M
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning.
    Diószegi, Attila
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Svensson, Ingvar L
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Effects of transition from lamellar to compacted graphite on thermal conductivity of cast iron2006Ingår i: International Journal of Cast Metals Research, ISSN 1364-0461, E-ISSN 1743-1336, Vol. 19, nr 6, s. 303-313Artikel i tidskrift (Refereegranskat)
  • 67.
    Holmgren, Daniel
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik. Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning.
    Svensson, Ingvar L.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik. Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning.
    Thermal Conductivity–Structure Relationships in Grey Cast Iron2005Ingår i: International Journal of Cast Metals Research, ISSN 1364-0461, E-ISSN 1743-1336, Vol. 18, nr 6, s. 321-330Artikel i tidskrift (Refereegranskat)
  • 68.
    Jarfors, Anders
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Seifeddine, Salem
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Olofsson, Jakob
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Svensson, Ingvar L.
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Critical Description of Defects and Mechanical Behaviour in Casting Process Modelling of Light Metals for Automotive Use2013Ingår i: Proceedings of the Twenty Second International Conference on Processing and Fabrication of Advanced Materials (PFAM-XXII), Singapore, 18-20 December, 2013, ACM Digital Library, 2013Konferensbidrag (Refereegranskat)
  • 69. Kappey, Jens
    et al.
    Schneider, Marc
    Svensson, Ingvar
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Sjölander, Emma
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Seifeddine, Salem
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Shahid, Akhtar
    Arnberg, Lars
    Microstructure, Defects and Properties in Aluminium Alloy Castings: Modelling and Simulation2010Ingår i: : Advanced methods for industrial engineering, 2010Konferensbidrag (Övrigt vetenskapligt)
  • 70.
    Kasvayee, Keivan Amiri
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Material och tillverkning.
    Ciavatta, Matteo
    University of Bologna, Bologna, Italy.
    Ghassemali, Ehsan
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Material och tillverkning.
    Svensson, Ingvar L.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Material och tillverkning.
    Jarfors, Anders E.W.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Material och tillverkning.
    Effect of Boron and Cross-Section Thickness on Microstructure and Mechanical Properties of Ductile Iron2018Ingår i: Materials Science Forum, ISSN 0255-5476, E-ISSN 1662-9752, Vol. 925, s. 249-256Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Eeffect of Boron addition on the microstructure and mechanical properties of ductile iron, GJS-500-7 grade was studied. Three cast batches with the Boron content of 10, 49 and 131ppm were cast in a casting geometry containing plates with thicknesses of 7, 15, 30, 50 and 75mm. Microstructure analysis, tensile test, and hardness test were performed on the samples which were machined from the casting plates. Addition of 49 ppm Boron decreased pearlite fraction by an average of 34±6% in all the cast plates. However, minor changes were observed in the pearlite fraction by increasing Boron from 49 to 131 ppm. Variation in the plate thickness did not affect the pearlite fraction. The 0.2% offset yield and ultimate tensile strength was decreased by an average of 11±1% and 18±2%, respectively. Addition of 49 ppm Boron decreased Brinell hardness by 16±1%, while 11±2% reduction was obtained by addition of 131ppm Boron.

  • 71.
    Kasvayee, Keivan Amiri
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Material och tillverkning. Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Ghassemali, Ehsan
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Material och tillverkning.
    Svensson, Ingvar L.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Material och tillverkning. Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Olofsson, Jakob
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Material och tillverkning. Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Jarfors, Anders E.W.
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Material och tillverkning.
    Characterization and modeling of the mechanical behavior of high silicon ductile iron2017Ingår i: Materials Science & Engineering: A, ISSN 0921-5093, E-ISSN 1873-4936, Vol. 708, s. 159-170Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This paper investigates the effect of the solidification conditions and silicon content on the mechanical properties of ductile iron and presents empirical models for predicting the tensile behavior based on the microstructural characterizations. Two ductile iron grades of GJS-500-7 and GJS-500-14 were cast with silicon content of 2.36% and 3.71%, respectively. The cast geometry consisted of six plates with different thicknesses that provided different cooling rates during the solidification. Microstructure analysis, tensile and hardness tests were performed on the as-cast material. Tensile behavior was characterized by the Ludwigson equation. The tensile fracture surfaces were analyzed to quantify the fraction of porosity. The results showed that graphite content, graphite nodule count, ferrite fraction and yield strength were increased by increasing the silicon content. A higher silicon content resulted in lower work hardening exponent and strength coefficient on the Ludwigson equation. The results for 0.2% offset yield and the Ludwigson equation parameters were modeled based on microstructural characteristics, with influence of silicon content as the main contributing factor. The models were implemented into a casting process simulation to enable prediction of microstructure-based tensile behavior. A good agreement was obtained between measured and simulated tensile behavior, validating the predictions of simulation in cast components with similar microstructural characteristics.

  • 72.
    König, Mathias
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Wessén, Magnus
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Svensson, Ingvar L.
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Modeling of Ferrite Growth in Compacted Graphite Iron2009Ingår i: Modeling of Casting, Welding and Advanced Solidification Processes - XII, Warrendale, Pennsylvania, USA: The Minerals, Metals & Materials Society (TMS) , 2009, s. 505-512Konferensbidrag (Övrigt vetenskapligt)
    Abstract [en]

    In the present work the ferrite growth in Compacted Graphite Iron (CGI) has been modeled. The relative amounts of ferrite and pearlite are of vital importance for the mechanical properties of cast iron. Thus, the possibility to predict the matrix microstructure in CGI by means of simulation would be an indispensable tool for foundries and design engineers. The increasing use of CGI, especially for automotive applications, further creates a need for this research.

     

    This study shows that graphite in CGI grows in cells similar to eutectic grey iron cells. In cast irons the ferrite nucleates on the graphite and thereafter grows around the graphite particles until the formation of pearlite interrupts further ferrite formation. The complexity of the graphite particles in CGI imply that the ferrite will grow in different stages. A microstructure study of CGI reveals that ferrite nucleates on compacted graphite particles where low amounts of pearlite stabilizing elements can be found. Growth of ferrite then proceeds until it impinges with ferrite nucleated on adjacent graphite particles. Further ferrite growth takes place radially away from the center of the CGI cell until pearlite nucleation interrupts its growth. At some point during this process ferrite nucleates on graphite nodules in the last to freeze areas of the microstructure giving a contribution to the ferrite content. In the present work growth models of ferrite in nodular cast iron are adapted to CGI.

  • 73.
    König, Mathias
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Wessén, Magnus
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Svensson, Ingvar L.
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    The Influence of alloying elements on Chill Formation in CGI2010Ingår i: Science and processing of cast iron IX: selected peer reviewed papers from the Ninth International Symposium on Science and Processing of Cast Iron, Luxor-Egypt, November 10-13, 2010 / [ed] Nofal, A. and Waly, M., Stafa-Zürich: Trans Tech Publications , 2010, s. 126-131Konferensbidrag (Refereegranskat)
    Abstract [en]

    The influence of alloying elements on the chill formation in Compacted Graphite Iron (CGI) is investigated. Chill wedges cast in an industrial foundry were used to investigate the chill formation. A total number of 19 chemical compositions were studied, including three trials of varying nodularity treatment level; four trials of varying copper content; four trials of varying silicon content; four trials of varying tin content and four trials of varying carbide promoter content. Three wedges were cast for each alloy composition, of which one was used for measuring the temperature at three different heights in the wedge.

    Contrary to some previous reports, the results indicate that low-nodularity CGI is not more prone to chill formation (columnar white) than high-nodularity CGI. Trends regarding the effect of alloying elements on chill formation are shown to generally be in agreement with previous work on spheroidal graphite iron and lamellar graphite iron. Most of the samples also show carbide formation in centre line areas of the wedge (inverse chill), this occurrence is also discussed in the paper.

     

  • 74. Larsson, D
    et al.
    Sjögren, Torsten
    Svensson, Ingvar L.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Modelling the plastic deformation behaviour of cast irons2008Ingår i: International Foundry Research/Giessereiforschung, ISSN 0046-5933, Vol. 60, nr 4, s. 8-16Artikel i tidskrift (Refereegranskat)
  • 75. Ledell, U
    et al.
    Ström, A
    Svensson, Ingvar L
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning.
    Österberg, L
    Mekaniska egenskaper och dimensionsstabilitet hos gashärdande bindemedelssystem för form och kärnmassor1998Rapport (Övrigt vetenskapligt)
  • 76. Lundback, E
    et al.
    Svensson, Ingvar L
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning.
    Prediction of structure formations of nodular cast iron by computer simulation1991Konferensbidrag (Refereegranskat)
  • 77. Lundback, E
    et al.
    Svensson, Ingvar L
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Simulations of Structure and Mechanical Properties of Nodular Cast Iron1990Ingår i: Advanced Materials and Processes: proceedings of the first European Conference on Advanced Materials and Processes, EUROMAT 8́9 / [ed] H. E. Exner, V. Schumacher, Oberursel: DGM,cop. , 1990, s. 141-146Konferensbidrag (Refereegranskat)
  • 78. Lundback, E
    et al.
    Svensson, Ingvar L
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Persson, P
    Modelling of Structure Formation and Relation to Mechanical Properties of Nodular Cast Iron1988Ingår i: Modelling of metal forming processes: proceedings of the Euromech 233 Colloquium, Sophia Antipolis, France, August 29-31, 1988 / [ed] J.L. Chenot, E. Oñate, Dordrecht: Kluwer, cop , 1988, s. 37-46Konferensbidrag (Refereegranskat)
  • 79. Lundback, E
    et al.
    Svensson, Ingvar L
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Thorgrimsson, J
    Prediction of Structure and Mechanical Properties in Grey Cast Iron1988Ingår i: Solidification processing 1987: proceedings of the third International Conference, organised by the Department of Metallurgy, University of Sheffield, and held at ... Sheffield, on 21-24 September 1987, London: Insitute of Metals , 1988, s. 113-116Konferensbidrag (Refereegranskat)
  • 80.
    Morri, Alessandro
    et al.
    University of Bologna, Italy.
    Ceschini, Lorella
    University of Bologna, Italy.
    Svensson, Ingvar
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Seifeddine, Salem
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Relationship between pore volume (by density measurements) and pore area  (on fracture surfaces) of A356 fatigue specimens2012Ingår i: TMS 2012 141st annual meeting & exhibition: Supplemental proceedings. Volume 2: material properties, characterization, and modeling, New York: John Wiley & Sons, 2012, s. 233-240Konferensbidrag (Refereegranskat)
  • 81. Nilsson, S
    et al.
    Svensson, Ingvar L
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning.
    Tillverkningsteknik för valsar1982Rapport (Övrigt vetenskapligt)
  • 82.
    Olofsson, Jakob
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Larsson, Dan
    Vestascastings Guldsmedshyttan AB.
    Svensson, Ingvar L.
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Effect of Austempering on Plastic Behavior of Some Austempered Ductile Iron Alloys2011Ingår i: Metallurgical and Materials Transactions. A, ISSN 1073-5623, E-ISSN 1543-1940, Vol. 42, nr 13, s. 3999-4007Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    A numerical description relating microstructure to elastic and plastic deformation behavior would make it possible to simulate the mechanical behavior of complex cast components with tailored material properties. Limited work and data have however been published regarding the connection between microstructure and plastic behavior of austempered ductile irons (ADI). In the current work the effects of austempering temperature and austempering time on the strength coefficient and the strain hardening exponent of the Hollomon equation have been investigated for two ADI alloys. The results show that the plastic behavior is highly dependent on the combination of austempering temperature and austempering time. It was found that as the austempering temperature increases both the strength coefficient and the strain hardening exponent initially decrease, but after reaching a minimum at the critical austempering temperature they show a plateau or an increase. The effect of the austempering time on the plastic behavior depends on the austempering temperature. At low austempering temperatures the strength coefficient and the strain hardening exponent decrease with increased austempering time, whereas at higher austempering temperatures they show little time dependence. These relations are explained by the microstructural transformations that take place during the austempering heat treatment.

  • 83.
    Olofsson, Jakob
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Material och tillverkning. Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Salomonsson, Kent
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Produktutveckling. Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Produktutveckling - Simulering och optimering.
    Svensson, Ingvar L.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Material och tillverkning. Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Modelling and simulations of ductile iron solidification-induced variations in mechanical behaviour on component and microstructural level2015Ingår i: IOP Conference Series: Materials Science and Engineering, Volume 84: MCWASP XIV: International Conference on Modeling of Casting, Welding and Advanced Solidification Processes / [ed] Hideyuki Yasuda, Kyoto University, Japan, London: Institute of Physics Publishing (IOPP), 2015, Vol. 84, s. 1-8Konferensbidrag (Refereegranskat)
    Abstract [en]

    The mechanical behaviour and performance of a ductile iron component is highly dependent on the local variations in solidification conditions during the casting process. Here we show a framework which combine a previously developed closed chain of simulations for cast components with a micro-scale Finite Element Method (FEM) simulation of the behaviour and performance of the microstructure. A casting process simulation, including modelling of solidification and mechanical material characterization, provides the basis for a macro-scale FEM analysis of the component. A critical region is identified to which the micro-scale FEM simulation of a representative microstructure, generated using X-ray tomography, is applied. The mechanical behaviour of the different microstructural phases are determined using a surrogate model based optimisation routine and experimental data. It is discussed that the approach enables a link between solidification- and microstructure-models and simulations of as well component as microstructural behaviour, and can contribute with new understanding regarding the behaviour and performance of different microstructural phases and morphologies in industrial ductile iron components in service.

  • 84.
    Olofsson, Jakob
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Material och tillverkning. Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Salomonsson, Kent
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Produktutveckling. Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Produktutveckling - Simulering och optimering.
    Svensson, Ingvar L.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Material och tillverkning. Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    The multi-scale closed chain of simulations – incorporating local variations in microstructure into finite element simulations2015Ingår i: TMS 2015 144th Annual Meeting & Exhibition: Supplemental Proceedings, Springer, 2015, s. 1057-1064Konferensbidrag (Refereegranskat)
    Abstract [en]

    Numerical simulations of component behavior and performance is critical to develop optimized and robust load-bearing components. The reliability of these simulations depend on the description of the components material behavior, which for e.g. cast and polymeric materials exhibit component specific local variations depending on geometry and manufacturing parameters. Here an extension of a previously presented strategy, the closed chain of simulations for cast components, to predict and incorporate local material data into Finite Element Method (FEM) simulations on multiple scales is shown. Manufacturing process simulation, solidification modelling, material characterization and representative volume elements (RVE) provides the basis for a microstructure-based FEM analysis of component behavior and a simulation of the mechanical behavior of the local microstructure in a critical region. It is discussed that the strategy is applicable not only to cast materials but also to injection molded polymeric materials, and enables a common integrated computational microstructure-based approach to optimized components.

  • 85.
    Olofsson, Jakob
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Svensson, Ingvar L.
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Casting and stress-strain simulations of a cast ductile iron component using microstructure based mechanical behavior2012Ingår i: IOP Conference Series: Materials Science and Engineering, Volume 33: MCWASP XIII: International Conference on Modeling of Casting, Welding and Advanced Solidification Processes / [ed] Andreas Ludwig, Menghuai Wu and Abdellah Kharicha, London: IOP Publishing , 2012Konferensbidrag (Refereegranskat)
    Abstract [en]

    The industrial demand for increased component performance with concurrent reductions in component weight, development times and verifications using physical prototypes drives the need to use the full potential of casting and Finite Element Method (FEM) simulations to correctly predict the mechanical behavior of cast components in service. The mechanical behavior of the component is determined by the casting process, and factors as component geometry and casting process parameters are known to affect solidification and microstructure formation throughout the component and cause local variations in mechanical behavior as well as residual stresses. Though residual stresses are known to be an important factor in the mechanical behavior of the component, the importance of local mechanical behavior is not well established and the material is typically considered homogeneous throughout the component. This paper deals with the influence of solidification and solid state transformation on microstructure formation and the effect of local microstructure variations on the mechanical behavior of the cast component in service. The current work aims to investigate the coupling between simulation of solidification, microstructure and local variations in mechanical behavior and stress-strain simulation. This is done by performing several simulations of a ductile iron component using a recently developed simulation strategy, a closed chain of simulations for cast components, able to predict and describe the local variations in not only elastic but also plastic behavior throughout the component by using microstructural parameters determined by simulations of microstructural evolution in the component during the casting process. In addition the residual stresses are considered. The results show that the FEM simulation results are significantly affected by including microstructure based mechanical behavior. When the applied load is low and the component is subjected to stress levels well below the yield strength of the material, the residual stresses highly affects the simulation results while the effect of local material behavior is low. As the applied load increases and the stress level in the component approaches and passes the yield strength, the effect of residual stresses diminishes while the effect of local mechanical behavior increases. In particular the predicted strain level is heavily affected by the use of local mechanical behavior. It is proposed that it is important to include both local mechanical behavior and residual stresses in stress-strain simulations to predict the true mechanical behavior of the component.

  • 86.
    Olofsson, Jakob
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Svensson, Ingvar L.
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Closed chain simulations of a cast aluminium component - Incorporating casting process simulation and local material characterization into stress-strain simulations2014Ingår i: ISIJ International, ISSN 0915-1559, E-ISSN 1347-5460, Vol. 54, nr 2, s. 259-265Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The coupling between simulations of solidification, microstructure and local mechanical behaviour and simulation of stress-strain behaviour is studied by applying a recently developed simulation strategy to a high pressure die cast aluminium component. In the simulation strategy, named a closed chain of simulations for cast components, the mechanical behaviour throughout the component is determined locally by a casting process simulation. The entire casting process, including mould filling and solidification, is simulated to predict the formation of microstructure and residual stresses throughout the component, and material characterization models are applied to relate microstructural features to local elastic and plastic mechanical material behaviour. The local material behaviour is incorporated into a finite element method (FEM) stress-strain simulation of a realistic load case of the component in service.

    In the current contribution the influences of local variations in mechanical behaviour and residual stresses on the component behaviour are investigated. The simulation results for local microstructure and mechanical behaviour are compared to experimental results, and the predicted local mechanical behaviour is incorporated on an element level into the FEM simulation. The numerical effect of the variations in mechanical behaviour is quantified by comparing the results achieved using local behaviour and homogeneous behaviour. The influence of residual stresses predicted by the casting process simulation on the component behaviour is also studied.

    The casting process simulation is found to accurately predict the local variations in microstructure throughout the component, and the local variations in mechanical behaviour are well described. The numerical results show that casting process simulation and modelling of microstructure formation, material behaviour and residual stresses are important contributions to correctly predict the behaviour of a cast aluminium component in service. This motivates the use of the proposed simulation strategy, and show the importance of incorporating materials science and casting process simulations into structural analyses of cast components. It is discussed that integration of these areas, e.g. using the closed chain of simulations, is important in order to increase the accuracy of FEM simulations and the product development efficiency in the future.

  • 87.
    Olofsson, Jakob
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Svensson, Ingvar L.
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Incorporating predicted local mechanical behaviour of cast components into finite element simulations2012Ingår i: Materials & Design, ISSN 0261-3069, Vol. 34, s. 494-500Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    A software which enables the incorporation of local variations in both elastic and plastic mechanical behaviour predicted by a casting process simulation into a Finite Element Method (FEM) simulation is presented. The software uses a piecewise linearization of the Hollomon or the Ludwigson equation to characterise plastic mechanical behaviour of the material on an element level throughout a component. The accuracy obtained in the linearization is investigated, and the performance of the software is studied using different input parameters. The applicability of the software is verified and demonstrated on a ductile iron component, and a simulation strategy for cast components denoted a closed chain of simulations for cast components is discussed.

  • 88.
    Olofsson, Jakob
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Svensson, Ingvar L.
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    The effects of local variations in mechanical behaviour – Numerical investigation of a ductile iron component2013Ingår i: Materials & design, ISSN 0264-1275, E-ISSN 1873-4197, Vol. 43, s. 264-271Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The effects of incorporating local mechanical behaviour into a structural analysis of a cast ductile iron component are investigated. A recently presented simulation strategy, the closed chain of simulations for cast components, is applied to incorporate local behaviour predicted by a casting process simulation into a Finite Element Method (FEM) structural analysis, and the effects of the strategy on predicted component behaviour and simulation time are evaluated. The results are compared to using a homogeneous material description. A material reduction method is investigated, and the effects of material reduction and number of linearization points are evaluated.

    The results show that local mechanical behaviour may significantly affect the predicted behaviour of the component, and a homogeneous material description fails to express the stress-strain distribution caused by the local variations in mechanical behaviour in the component. The material reduction method is able to accurately describe this effect while only slightly increasing the simulation time. It is proposed that local variations in mechanical behaviour are important to consider in structural analyses of the mechanical behaviour of ductile iron components.

  • 89.
    Olofsson, Jakob
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Svensson, Ingvar L.
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Lava, Pascal
    Department MTM, KU Leuven, Belgium.
    Debruyne, Dimitri
    Department MTM, KU Leuven, Belgium.
    Characterisation and investigation of local variations in mechanical behaviour in cast aluminium using gradient solidification, Digital Image Correlation and finite element simulation2014Ingår i: Materials & Design, ISSN 0261-3069, Vol. 56, s. 755-762Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Due to design and process-related factors, there are local variations in the microstructure and mechanical behaviour of cast components. This work establishes a Digital Image Correlation (DIC) based method for characterisation and investigation of the effects of such local variations on the behaviour of a high pressure, die cast (HPDC) aluminium alloy. Plastic behaviour is studied using gradient solidified samples and characterisation models for the parameters of the Hollomon equation are developed, based on microstructural refinement. Samples with controlled microstructural variations are produced and the observed DIC strain field is compared with Finite Element Method (FEM) simulation results. The results show that the DIC based method can be applied to characterise local mechanical behaviour with high accuracy. The microstructural variations are observed to cause a redistribution of strain during tensile loading. This redistribution of strain can be predicted in the FEM simulation by incorporating local mechanical behaviour using the developed characterization model. A homogeneous FEM simulation is unable to predict the observed behaviour. The results motivate the application of a previously proposed simulation strategy, which is able to predict and incorporate local variations in mechanical behaviour into FEM simulations already in the design process for cast components.

  • 90. Piotrowski, K. J
    et al.
    Svensson, Ingvar L
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning.
    On the Shell Mould Behavior at the Lost Wax Process1987Rapport (Övrigt vetenskapligt)
  • 91. Piotrowski, K
    et al.
    Svensson, Ingvar L
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning.
    Inlfuense of binderson the mechanical properties of shells used in the lost wax process1983Rapport (Övrigt vetenskapligt)
  • 92. Piotrowski, K
    et al.
    Svensson, Ingvar L
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning.
    On the ester curing of sodium silicate based binders,1984Ingår i: The British Foundryman,Artikel i tidskrift (Refereegranskat)
  • 93. Schmidt, P
    et al.
    Svensson, Ingvar L
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning.
    Solidification and heat transfer in permanent mould casting1991Konferensbidrag (Refereegranskat)
  • 94. Schneider, Marc
    et al.
    Schaefer, Wilfred
    Mazourkevitch, G.
    Wessén, Magnus
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik. Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Komponentteknologi.
    Svensson, Ingvar L.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik. Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Komponentteknologi.
    Seifeddine, Salem
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik. Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Komponentteknologi.
    Prediction of Microstructure and Microporosity Development in Aluminium Gravity Casting Processes2005Ingår i: Proc. SFB Kolloquium, RWTH, Aachen, 2005., 2005Konferensbidrag (Refereegranskat)
    Abstract [en]

    Initially, when implementing a design automation system the focus is on successfully developing a system that generates design variants based on different customer specifications, i.e. the execution of system embedded knowledge and system output. However, in the long run two important aspects are the modelling and management of the knowledge that govern the designs. The increasing emphasis to deploy a holistic view on the products properties and functions implies an increasing number of life-cycle requirements. These requirements should all be used to enhance the knowledge-base allowing for correct decisions to be made. In a system for automated variant design these life-cycle requirements have to be expressed as algorithms and/or computational statements to be intertwined with the design calculations. The number of requirements can be significantly large and they are scattered over different systems. The aim of the presented work is to provide an approach for modelling of manufacturing requirements, supporting both knowledge execution and information management, in systems for automated variant design.

  • 95. Schneider, Marc
    et al.
    Schaefer, Wilfred
    Sjölander, Emma
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Seifeddine, Salem
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Svensson, Ingvar L.
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning.
    Simulation of Microstructure and Mechanical Properties of Aluminum Components during Casting and Heat Treatment2012Konferensbidrag (Övrigt vetenskapligt)
  • 96. Schneider, Mark
    et al.
    Schaefer, Willfreid
    Wessén, Magnus
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning.
    Svensson, Ingvar L
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning.
    Olsson, Jörgen
    Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Material och tillverkning - gjutning.
    Beckmann, Christofer
    Prediction of Microstructure and Microporosity Development in Aluminium Gravity Casting Processes2005Konferensbidrag (Refereegranskat)
  • 97.
    Seifeddine, Salem
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik. Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Komponentteknologi.
    Johansson, Sten
    Svensson, Ingvar L.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik. Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsområde Komponentteknologi.
    The influence of cooling rate and manganese content on the beta Al5FeSi phase formation and mechanical properties of Al-Si based alloys2008Ingår i: Materials Science & Engineering: A, ISSN 0921-5093, E-ISSN 1873-4936, Vol. 490, nr 1-2, s. 385-390Artikel i tidskrift (Refereegranskat)
  • 98.
    Seifeddine, Salem
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Sjögren, Torsten
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Svensson, Ingvar L.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    The Influence of Al5FeSi on the Tensile Properties of a HPDC Cast Aluminium Alloy: Potential and Outcome in a Casting2004Ingår i: The High Tech Die Casting International Conference, Brescia, Italy, 21st-22nd April 2004, 2004, s. 10-Konferensbidrag (Övrigt vetenskapligt)
  • 99.
    Seifeddine, Salem
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Sjögren, Torsten
    Svensson, Ingvar L.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Variations in Microstructure and Mechanical Properties of Cast Aluminium EN AC 43100 Alloy2007Ingår i: Metallurgical Science & Technology, ISSN 0393-6074, Vol. 25, nr 1Artikel i tidskrift (Refereegranskat)
  • 100.
    Seifeddine, Salem
    et al.
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Svensson, Ingvar
    Högskolan i Jönköping, Tekniska Högskolan, JTH, Maskinteknik.
    Prediction of mechanical properties of cast aluminium components at various iron contents2010Ingår i: Materials & design, ISSN 0264-1275, E-ISSN 1873-4197, Vol. 31, nr Supplement 1, s. S6-S12Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The simulation of microstructure and mechanical properties is of great importance as a lead in bringing the foundry process and cast materials closer to the casting designer. Prediction of the formation of the microstructure during solidification is a supporting factor for strength optimization of cast aluminium components that allows an improved performance and increased competitiveness of cast engineering components.

    The deformation behaviour and the integrity of cast components depends mostly on the chemical composition of the material, especially the iron content, solidification behaviour and the resulting microstructural characteristics. This paper aims to demonstrate the capabilities of microstructure and mechanical properties modelling of aluminium cast materials and components. The validation of the models includes investigation of cast cylinder head and measured microstructure and mechanical properties as well as their distributions. The effect of iron-rich compound’s morphology and fraction on the plastic deformation behaviour has been studied and modelled in terms of strain hardening exponent and strength coefficient. This approach enables the prediction of local microstructure and mechanical properties. The developed models have been implemented in a cast simulation software for simulation of the cast cylinder head.

    The model predictions of microstructural quantities and mechanical properties are in good agreement with experimental measurements.

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