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Development of new Al-Cu-Si alloys for high temperature performance
Högskolan i Jönköping, Tekniska Högskolan, JTH, Material och tillverkning.ORCID-id: 0000-0002-5874-5473
Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Material och tillverkning.ORCID-id: 0000-0001-6481-5530
Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Material och tillverkning.ORCID-id: 0000-0002-0101-0062
Vise andre og tillknytning
2017 (engelsk)Inngår i: Advanced Materials Letters, ISSN 0976-3961, E-ISSN 0976-397X, Vol. 8, nr 6, s. 695-701Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

In a quest to develop new light metal alloys that can perform excellently at elevated-temperatures (from 300°C to 400°C), a ternary eutectic Al-Cu-Si alloy was exploited to gain a deeper understanding of the alloy system and its suitability for high temperature applications. The alloys studied, with chemical composition of Al-27%Cu-5%Si (by weight percent) with Ni addition in the range of 0 to 1.5%wt, were cast in a rapid solidification casting technique. The solidification characteristics of the alloy was studied using the Thermo-Calc software. Microstructures were characterized in a scanning electron microscope coupled with energy dispersive spectrometry (SEM-EDS). Finally, the elevated-temperatures tensile properties of the alloys were investigated. Comparing the microstructures and mechanical properties of these Al-Cu-Si(-Ni) alloys with conventional Al-Si alloy A319, the refined microstructure with dispersed Ni intermetallic particles formed in the as-cast Al-Cu-Si(-Ni) alloys deliver improved elevated temperature properties. In particular, the yield strength and ultimate tensile strength of the new alloy with 1.5% Ni at 400?C were observed to be 220% and 309% higher, respectively, than for conventional A319 alloy.

sted, utgiver, år, opplag, sider
VBRI Press , 2017. Vol. 8, nr 6, s. 695-701
Emneord [en]
Eutectic composite structure, casting, solidification, elevated-temperature performance, thermo-calc, tensile properties
HSV kategori
Identifikatorer
URN: urn:nbn:se:hj:diva-34093DOI: 10.5185/amlettOAI: oai:DiVA.org:hj-34093DiVA, id: diva2:1050063
Tilgjengelig fra: 2016-11-28 Laget: 2016-11-28 Sist oppdatert: 2018-02-08

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Awe, Samuel A.Seifeddine, SalemJarfors, Anders E.W.

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