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Research on Heat-treatment of Spray Deposited Al-Si-Mg Alloy
Pages: 163-165
Year: Issue:  4
Journal: Hot Working Technology

Keyword:  spray depositionAl-Si-Mg alloyheat treatmentmicrostructuremechanical properties;
Abstract: Heat-treatment process of spray deposited Al-7Si-0.4Mg alloy was investigated and the optimum heat-treatment process was determined. The effects of heat-treatment process on microstructure and mechanical properties were studied using OM, XRD, TEM and tensile test. The results show that the spray deposition can decrease the grain size and the second phrase in aluminum alloy. Rolling and subsequent heat treatment can eliminate porosity, modify Si particles and promote precipitation of the second phrase so as to improve mechanical properties.
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