Enhancing room temperature mechanical properties of Mg-9Al-Zn alloy by multi-pass equal channel angular extrusion

被引：29
|
作者：
Jiang Jufu [1 ,2 ]
Wang Ying [3 ,4 ]
Du Zhiming [1 ]
Qu Jianjun [2 ]
Sun Yi [4 ]
Luo Shoujing [1 ]
机构：
[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
[2] Harbin Inst Technol, Postdoctoral Mobile Stn Mech Engn, Harbin 150001, Peoples R China
[3] Harbin Inst Technol, Sch Mechatron Engn, Harbin 150001, Peoples R China
[4] Harbin Inst Technol, Postdoctoral Mobile Stn Mech, Harbin 150001, Peoples R China
来源：
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2010年 / 210卷 / 05期
关键词：
Equal channel angular extrusion; Mg-9Al-Zn alloy; Mechanical properties; Microstructure; Room temperature; MAGNESIUM ALLOY; STRAIN PATH; TEXTURE; MICROSTRUCTURE; DUCTILITY; AZ91; SUPERPLASTICITY; EVOLUTION;
D O I：
10.1016/j.jmatprotec.2009.12.013
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Influence of equal channel angular extrusion on room temperature mechanical properties of cast Mg-9Al-Zn alloy was investigated. The results show that room temperature mechanical properties of Mg-9Al-Zn alloy, such as yield strength, ultimate tensile strength and elongation, can be improved heavily by equal channel angular extrusion. Processing routes, processing temperature and extrusion passes have important influence on room temperature mechanical properties of processed Mg-9Al-Zn alloy by equal channel angular extrusion. The optimum room temperature mechanical properties such as yield strength of 209 MPa, ultimate tensile strength of 339 MPa and elongation of 14.1%, can be obtained when Mg-9Al-Zn alloy was processed by equal channel angular extrusion for 6 passes at route B-C at 498 K. Large bulk materials of Mg-9Al-Zn alloy with average grain size of 4 mu m and high mechanical properties can be prepared. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：751 / 758
页数：8
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