Effects of Nd on microstructure and mechanical properties of as-cast LA141 alloys

被引：70
作者：
Liu, Bin [1 ]
Zhang, Milin [1 ]
Wu, Ruizhi [1 ]
机构：
[1] Harbin Engn Univ, Minist Educ, Key Lab Superlight Mat & Surface Technol, Harbin 150001, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 487卷 / 1-2期
关键词：
Mg-Li alloys; Nd; LA141; alloys; microstructure; mechanical properties;
D O I：
10.1016/j.msea.2007.10.073
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Microstructure and mechanical properties of LA141(Mg-14Li-1A1)-xNd alloys were studied. Results show that Nd has obvious refining effect on the alloys when the Nd addition is 0.6 wt%. 0.6 wt% Nd addition makes the grain size of LA141 alloys decrease by 30%. When Nd addition is less than 0.6 wt%, Al2Nd formed in alloys is favorable for strength improvement. When Al2Nd amount is too much, cracks are easy to form during tensile test, causing the decrease of strength. 0.6 wt% Nd addition makes LA141 alloys reach its peak strength. The strength of Mg-14Li-1Al-0.6Nd alloy increases by 45%, compared with that of LA141 alloys. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：347 / 351
页数：5
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