Microstructure and mechanical properties of Mg-9Li-3Al-xGd alloys

被引：10

作者：

Zhang, B. ^{[1
]}

Peng, X. D. ^{[1
]}

Ma, Y. ^{[1
]}

Li, Y. M. ^{[1
]}

Yu, Y. Q. ^{[1
]}

Wei, G. B. ^{[1
,2
]}

机构：

[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China

[2] Univ Waterloo, Coll Mech & Mechatron Engn, Waterloo, ON N2L 3G1, Canada

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 2015年 / 31卷 / 09期

关键词：

Mg-Li-Al alloy; Microstructure; Mechanical properties; GRAIN-REFINEMENT; DEFORMATION-BEHAVIOR; ALUMINUM-ALLOYS; STRENGTH; TEXTURE; ELEMENT; GD;

D O I：

10.1179/1743284714Y.0000000711

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The influence of gadolinium on the microstructure and mechanical properties of Mg-9Li-3Al alloy was investigated. Results show that the addition of Gd can effectively refine the alpha-Mg phase and change the morphology of the alpha-Mg phase. Meanwhile, the Al3Gd phase is mainly distributed at the boundaries of the alpha-Mg phase and inside the alpha-Mg phase. The mechanical property tests reveal that the addition of Gd can effectively improve the mechanical properties of the as cast alloys. When the content of Gd is 2.0%, the tensile strength and yield stress (engineering stress) reach max values of 188 and 174 MPa respectively. When the content of Gd addition is 2.5%, the elongation of the alloy is 15.7%.

引用

页码：1035 / 1041

页数：7

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