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Effects of Alloying Element and Heat-Treatment Condition on the Strength of Squeeze-Casted Al-3.0 wt%Si Alloy  

Lee, Hag-Ju (Dept. of Naval Architecture, Tongmyoung University)
Hwang, Jae-Hyoung (Daehan Special Metal Co. LTd.)
Kwon, Hae-Wook (School of Mat. Sci. & Eng., Yeungnam University)
Publication Information
Journal of Korea Foundry Society / v.26, no.6, 2006 , pp. 249-257 More about this Journal
Abstract
The effects of alloying element and the condition of heat-treatment on the strength of squeeze-cast Al-3.0 wt%Si alloy were investigated. The strength of the alloy without grain refinement was increased with increase Cu content upto 3.0 wt% and rather decreased beyond that. The tensile strength of the alloy with grain refinement increased with Cu content upto 3.0 wt% and not changed beyond that. The strength of the alloy without grain refinement increased with the Mg content. The tensile strength with grain refinement increased with the Mg content upto 0.50 wt% and then decreased beyond that. The strength of the grain refined alloy increased by individual and simultaneous additions of Cu and Mg and the maximum strength was obtained with Al-3.0 wt%Si-4.5 wt%Cu-0.50 wt%Mg alloy. The optimum heat-treatment condition for this alloy was obtained.
Keywords
Squeeze casting; Strength; Mechanical property; Al-casting alloy; Al-Si alloy;
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