Effects of Ce and Sb on the microstructure and properties of AZ91D magnesium alloy prepared by the EPC process

查看全文 作　　者：LI Jiqiang DONG Xuanpu FAN Zitian WANG [1]Yuanqing

机构地区：[1]State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, China

出　　处：《Rare Metals》索引2008年第27卷第1期,共5页

基　　金：supported by the National High-Tech Research and Development Program of China(No.2007AA03Z113);the National Natural Science Foundation of China(Nos.50275058 and 50775085). 摘　　要：The effects of small amounts of cerium and antimony additions on the microstructure and the mechanical properties of AZ91D(Mg-9Al-Zn) based alloy were researched via the expendable pattern casting(EPC) process.The results show that the microstructure is obviously refined and the tensile strength of the AZ91D based alloy at ambient temperature is significantly improved.When compared to AZ91D,the AZ91D-1.0%Ce-0.4%Sb alloy has higher ultimate tensile strength and elongation.Its ultimate tensile strength and elongation are enhanced by 39% and 47%,respectively.The morphology of the tensile fracture of the AZ91D-1.0%Ce-0.4%Sb alloy has more characteristics of quasi-cleavage.This indicates that it has had a larger plastic deformation before failure.The tensile strength and elongation decrease with the increase of Ce and Sb contents because of the coarsening and volume increase of CeSb and Al11Ce3 phases. 关键词：微结构机械力学 AZ91D 镁合金

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Effects of Ce and Sb on the microstructure and properties of AZ91D magnesium alloy prepared by the EPC process

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