Effect of Al additions on grain refinement and mechanical properties of Mg-Sm alloys

被引：68
|
作者：
Wang, Cunlong
Dai, Jichun
Liu, Wencai
Zhang, Liang
Wu, Guohua [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Natl Engn Res Ctr Light Alloys Net Forming, Shanghai 200240, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 620卷
基金：
中国国家自然科学基金; 高等学校博士学科点专项科研基金;
关键词：
Magnesium alloys; Mg-Sm; Grain refinement; Al2Sm particles; Mechanical properties; MAGNESIUM ALLOYS; ALUMINUM-ALLOYS; CREEP-BEHAVIOR; SOLID-SOLUTION; Y ALLOY; MICROSTRUCTURE; CRYSTALLOGRAPHY; INOCULATION; ZR; TI;
D O I：
10.1016/j.jallcom.2014.09.025
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The effect of Al additions on grain refinement and mechanical properties of Mg-Sm alloys has been investigated. The addition of 3 wt.% Al led to significant grain refinement of Mg-xSm (x = 4, 6 and 8 wt.%) alloys due to the formation of Al2Sm particles which acted as active nucleant particles for the Mg matrix. An orientation relationship ((1) over bar 11)(Al2Sm)//(0002)(Mg), [(1) over bar(2) over bar1](Al2Sm)//[11 (2) over bar0](Mg), [0 (1) over bar1](Al2Sm)//[01 (1) over bar0](Mg) was reproducibly observed between alpha-Mg and Al2Sm. Furthermore, the Mg-4Sm alloy refined by Al additions had higher ultimate tensile strength and elongation than that refined by Zr which is considered as the most potent grain refiner for Mg alloys. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：172 / 179
页数：8
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