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The Influence of Deoxidation Practice on the As-Cast Grain Size of Austenitic Manganese Steels
Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing – Casting.ORCID iD: 0000-0002-3671-8087
Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing – Casting.ORCID iD: 0000-0003-2929-7891
Swerea SWECAST AB, Sweden.
Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing – Casting.ORCID iD: 0000-0002-0101-0062
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2017 (English)In: Metals, ISSN 2075-4701, Vol. 7, no 6, 186Article in journal (Refereed) Published
Abstract [en]

The effect of in-situ precipitating particles on the grain size of Al-Ti-treated and untreated Hadfield steel cast in a pilot scale environment was studied. Hadfield steel was melted in an induction furnace and cast in Y-Block samples. Light Optical Microscopy (LOM) and the intercept method were utilized for the grain size measurements. Additionally, Thermo-Calc Software TCFE7 Steels/Fe-alloys database version 7 was used for thermodynamic equilibrium calculations of the mole fraction of particles. The planar disregistry values between the austenite and the precipitating particles were calculated. It was observed that increasing oxide content in samples with low Ti(CN) content resulted in a finer microstructure, while increasing the Ti(CN) content under similar oxide content levels led to a coarser microstructure. The potency of each type of particle to nucleate austenitic grains was determined. Spinel (MnAl2O4, MgAl2O4) particles were characterized as the most potent, followed by olivine (Mn2SiO4), corundum (Al2O3, TiO2), and finally Ti(CN), the least potent particle.

Place, publisher, year, edition, pages
MDPI , 2017. Vol. 7, no 6, 186
Keyword [en]
Hadfield steel, grain size, austenite, deoxidation, particles, aluminum, titanium, oxides, titanium nitrides
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:hj:diva-35598DOI: 10.3390/met7060186Scopus ID: 2-s2.0-85019680224OAI: oai:DiVA.org:hj-35598DiVA: diva2:1098644
Available from: 2017-05-24 Created: 2017-05-24 Last updated: 2017-06-13Bibliographically approved

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CiteExportLink to record
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