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

页码：1757 / 1763

页数：7

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