2011•Rejiagong gongyiRequires access

Influence of Al-Si Master Alloy on Microstructure and Property of Al-Mg-Si Alloy

Gao Ai-hua

Abstract

The effects of Al-Si master alloy on microstructure and property of Al-Mg-Si system alloy were studied,and the mechanism of Si in influencing the microstructure and property of the alloy was discussed.The results indicate that Al-Si master alloy with 18% Si can refine the microstructure of cast aluminum alloy and improve the mechanical properties.The corrosion resistance of Al-Mg-Si system alloy decreases with the increase of Si content in Al-Si master alloy,the corrosion resistance significantly decreases when more than 18%Si in Al-Si master alloy.The tensile strength of Al-Mg-Si system alloy improves with the increase of Si content in Al-Si master alloy,the tensile strength declines when Si content is above 20 %.

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Key concepts: Alloy, Microstructure, Materials science, 6111 aluminium alloy, Metallurgy, 6063 aluminium alloy, Ultimate tensile strength, 5005 aluminium alloy