摘要
Microstructure and mechanical properties of AZ31-0.5%Si(mass fraction) alloy processed by ECAP were investigated. Results show that Mg2Si phase formed during solidification can be broken up and be dispersed in matrix by ECAP. With the increase of ECAP passes, Mg2Si phase in microstructure tends to distribute uniformly. The mean grain size is about 4μm, and the mean size of Mg2Si is about 6 Jim. The elongation of AZ31-0.5%Si alloy is significantly increased after ECAP and then changes a little with increasing ECAP passes. The ultimate strength of as-extruded AZ31-0.5%Si alloy reaches 348.9 MPa, while its strength decreases after ECAP.
Microstructure and mechanical properties of AZ31-0.5%Si（mass fraction） alloy processed by ECAP were investigated. Results show that Mg2Si phase formed during solidification can be broken up and be dispersed in matrix by ECAP. With the increase of ECAP passes, Mg2Si phase in microstructure tends to distribute uniformly. The mean grain size is about 4 μm, and the mean size of Mg2Si is about 6 μm. The elongation of AZ31-0.5%Si alloy is significantly increased after ECAP and then changes a little with increasing ECAP passes, The ultimate strength of as-extruded AZ31-0.5%Si alloy reaches 348.9 MPa, while its strength decreases after ECAP.
出处
《中国有色金属学会会刊：英文版》
CSCD
2006年第A03期1660-1663,共4页
Transactions of Nonferrous Metals Society of China
基金
Project(50674067) supported by the National Natural Science Foundation of China
关键词
镁合金
微观结构
机械性能
有色金属
magnesium alloy
microstructure
mechanical properties
Mg2Si
ECAP
作者简介
Corresponding author： WANG Qu-dong; Tel： ＋86-21-62933139; E-mail： wangqudong@sjtu.edu.cn
