Microstructure evolution and mechanical properties of Mg-9Li-3Al-2Sr alloy in change channel angular pressing

被引：3
|
作者：
Wei, G. [1 ]
Peng, X. [1 ]
Liu, J. [1 ]
Hadadzadeh, A. [2 ]
Yang, Y. [1 ]
Xie, W. [1 ]
机构：
[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China
[2] Univ Waterloo, Mech & Mechatron Engn Dept, Waterloo, ON N2L 3G1, Canada
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2015年 / 31卷 / 14期
关键词：
Mg-Li alloys; Al4Sr; Intermetallic phase; Microstructure; Mechanical properties; SEVERE PLASTIC-DEFORMATION; GRAIN-REFINEMENT; TENSILE PROPERTIES; AL; MAGNESIUM; SR; SUPERPLASTICITY; BEHAVIOR;
D O I：
10.1179/1743284715Y.0000000002
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Change channel angular pressing is a specially designed continuous processing technique to prepare bulk ultrafine grained materials. The extrusion process and structure evolution of Mg-9Li-3Al-2Sr alloy were analysed. The long strip phases of alpha-Mg and beta-Li were sheared into short pieces during extrusion. The continuous distribution Al4Sr phases were extruded into small particles, which are mainly observed in the alpha/beta phase interface and beta-Li matrix phase. Structure homogeneity can be achieved, and the mechanical properties were improved with one pass processing. The effect of Al4Sr phase on the microstructure and mechanical properties of Mg-9Li-3Al-2Sr alloy was observed to be different due to the various extrusion modes and parts.
引用
收藏
页码：1757 / 1763
页数：7
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