Effect of Fe-rich intermetallics on the microstructure and mechanical properties of thixoformed A380 aluminum alloy
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The effect of alpha-Fe and beta-Fe intermetallics concentration and morphology as well as alpha-Al morphology on the microstructure and mechanical properties of thixoformed and gravity cast A380 alloy was reported. The alpha-Al15Si2(Fe,Mn)(3) intermetallic particle was observed polyhedral morphology in thixoforming while it was observed Chinese script morphology in conventional gravity casting. The beta-Al5FeSi particle was solidified in the form of small plate in thixoforming while it was solidified in the form of needle-like in gravity casting at the grain boundaries of alpha-Al. The mechanical properties of the alloys have been enhanced by thixoforming compared with the conventional cast condition. Copyright (C) 2014, Karabuk University. Production and hosting by Elsevier B.V. All rights reserved.