In-situ microcompression study of nanostructured Mg alloy micropillars

被引：11
|
作者：
Pozuelo, M. [1 ]
Chang, Y. W. [1 ]
Yang, J. -M. [1 ]
机构：
[1] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA
来源：
MATERIALS LETTERS | 2013年 / 108卷
关键词：
Nanostructured magnesium alloy; Microcompression; Transmission electron microscopy; Slip; Contraction twins; DEFORMATION; SIZE; PLASTICITY; BEHAVIOR; AL;
D O I：
10.1016/j.matlet.2013.05.039
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report the compressive results of nanostructured Mg micropillars. Using in-situ scanning electron microscopy microcompression tests, we directly study the mechanical behavior of nanostructured Mg90Al10 (wt%) alloys that have been processed by cryomilling and spark plasma sintering. Compressive yield strength of 320 MPa and an elongation at failure higher than 12% was achieved. Using high-resolution transmission electron microscopy, we demonstrate that basal plane sliding and contraction twins are the deformation mechanisms involved in the shear band that occurs at 10% of strain. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：320 / 323
页数：4
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