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On the role of copper and cooling rates on the microstructure, defect formations and mechanical properties of Al-Si-Mg alloys
Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing – Casting.ORCID iD: 0000-0001-6481-5530
Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing – Casting.
Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing – Casting.
2013 (English)In: Materials Sciences and Applications, ISSN 2153-117X, E-ISSN 2153-1188, Vol. 4, no 3, 171-178 p.Article in journal (Refereed) Published
Abstract [en]

This paper aims to assess the role of Cu on Al-Si-Mg alloys, in a range of 0 - 5 wt%, qualitatively on microstructure, defect formation, in terms of porosity, and strength in the as-cast conditions. The ternary system of Al-Si-Mg, using the A356 alloy as a base material, were cast using the gradient solidification technique; applying three different solidification rates to produce directional solidified samples with a variety of microstructure coarsenesses. Microstructural observations reveal that as the Cu levels in the alloys are increased, the amounts of intermetallic compounds as well as the Cu concentration in the α-Al matrix are increased. Furthermore, the level of porosity is unaffected and the tensile strength is improved at the expense of ductility.

Place, publisher, year, edition, pages
2013. Vol. 4, no 3, 171-178 p.
Keyword [en]
Aluminium-Silicon Alloys, Microstructure, Mechanical Properties, Gradient Solidification
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:hj:diva-20207DOI: 10.4236/msa.2013.43020OAI: oai:DiVA.org:hj-20207DiVA: diva2:584552
Funder
Knowledge Foundation
Available from: 2013-01-09 Created: 2013-01-09 Last updated: 2015-10-02Bibliographically approved

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Seifeddine, SalemSjölander, EmmaBogdanoff, Toni
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