2012•Rejiagong gongyiRequires access

Effects of Heat Treatments on High-temperature Mechanical Properties of Modified Cast Al-Si Alloy

SU Guang-cai

Abstract

Effects of heat treatment on high-temperature mechanical properties of modified cast Al-Si alloy were investigated.Heat treatment process for modified cast Al-Si alloy is(495±3) ℃× 5 h solution treatment,(165±3) ℃× 6 h aging treatment.The results of the study show that,after heat treatment,improved material organization becomes fine,and the matrix structures are spheroidize.Precipitation phase Al2Cu,Al6Cu3N,AlxCuCe which improve the alloy high-temperature properties are small and disperse.

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Key concepts: Alloy, Materials science, Precipitation, Metallurgy, Phase (matter), Composite material, Organic chemistry, Physics