Microstructures and mechanical properties of Mg-6Li-6.5Gd-1Dy-2Zn alloys

被引：0

作者：

Niu, Zhongyi ^{[1
]}

Leng, Zhe ^{[1
]}

Zhang, Jinghuai ^{[1
]}

Wu, Ruizhi ^{[1
]}

Zhang, Milin ^{[1
]}

机构：

[1] Harbin Engn Univ, Key Lab Superlight Mat & Surface Technol, Minist Educ, Harbin 150001, Peoples R China

来源：

ADVANCES IN MATERIALS AND PROCESSING TECHNOLOGIES XV | 2014年 / 773-774卷

关键词：

Microstructures; Mechanical properties; Mg-Li based alloys; SUPERPLASTICITY;

D O I：

10.4028/www.scientific.net/MSF.773-774.275

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Extrusion Mg-6Li-6.5Gd-1Dy-2Zn alloy was prepared successfully by vacuum melting. The microstructures and mechanical properties of as-cast and as-extruded Mg-6Li-6.5Gd-1Dy-2Zn alloys were investigated. Extruding process refines the alpha(Mg) phase and beta(Li) phase, and makes the Mg3X phase crushed and dispersed well. After heat treatment, Mg3X phase particles became finer and much more RE enriched phase particles formed in the matrix. These effects result in the improvement of mechanical properties of the alloys. In this study, after solution treated at 510 degrees C for 3h and aged at 215 degrees C for 99h, the as-extruded alloy exhibits the best mechanical properties, and the microhardness, ultimate tensile and elongation reach 103.0, 249 MPa and 34.8%, respectively.

引用

页码：275 / 280

页数：6

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