Microstructure and Tensile Properties of a Rapidly Solidified High Silicon Aluminum Alloy
SUN Jian-fei1, XIE Zhuang-de2, SHEN Jun1, ZHOU Bi-de1, LI Qing-chun1
1. School of Material Science and Engineering, Harbin Institute of Technology, Harbin 150001, China; 2. School of Material Science and Engineering, Shanghai Jiaotong University, Shanghai 230003, China
Abstract：An Al-17Si-6Fe-4.5Cu-0.5Mg alloy was manufactured by rapid solidification/powder metallurgy(RS/PM) process and followed by T6 temper. Microstructure and tensile properties of the extruded and T6 tempered alloys were studied by means of modern measuring techniques. The results show that the second phases in the microstructure of the alloy were obviously refined by this process, through T6 temper coarsening of the second phases occurred and a new phase precipitated in the matrix; the tensile properties of the alloy were characterized by high strength, low ductility and improved heat resistance.
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2001, Vol. 0 
