Effects of cerium on the microstructure and mechanical properties of Mg-20Zn-8Al alloy

被引：47
作者：
Xiao, Wenlong [1 ,2 ]
Jia, Shusheng [2 ]
Wang, Jun [1 ]
Wu, Yaoming [1 ]
Wang, Limin [1 ]
机构：
[1] Chinese Acad Sci, Changchun Inst Appl Chem, Key Lab Rare Earth Chem & Phys, Changchun 130022, Peoples R China
[2] Jilin Univ, Minist Educ, Key Lab Automobile Mat, Changchun 130025, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 474卷 / 1-2期
基金：
高等学校博士学科点专项科研基金;
关键词：
Mg-Zn-Al alloy; cerium; microstructure; mechanical properties;
D O I：
10.1016/j.msea.2007.04.008
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Mg-20Zn-8Al-xCe(x=0-2 wt.%) alloys were prepared by metal mould casting method, the effects of Ce on the microstructure and mechanical properties of the alloys were investigated. The results showed that the dendrite as well as gram size were refined by the addition of Ce, and the best refinement was obtained in 1.39% Ce containing alloy. The main phases in the as cast alloys were alpha-Mg and tau-Mg-32 (Al, Zn)(49), and Al4Ce phase was found in the alloys contained more than 1.39% Ce. The addition of Ce improved the mechanical properties of the alloys. The strengthening mechanism was attributed to grain refinement and compound reinforced. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：317 / 322
页数：6
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