Twinning behavior in a rolled Mg-Al-Zn alloy under dynamic impact loading

被引：14
|
作者：
Mao, Longhui [1 ]
Liu, Chuming [1 ,2 ]
Chen, Tao [1 ]
Gao, Yonghao [1 ]
Jiang, Shunong [1 ]
Wang, Renke [1 ]
机构：
[1] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China
[2] Hunan Univ Sci & Technol, Sch Mat Sci & Engn, Xiangtan 411201, Peoples R China
来源：
SCRIPTA MATERIALIA | 2018年 / 150卷
基金：
中国国家自然科学基金;
关键词：
Twinning; Dynamic impact loading; Finite element analysis; EBSD; Magnesium alloy; MAGNESIUM ALLOY; DEFORMATION; COMPRESSION; TWINS; PLASTICITY; DUCTILITY;
D O I：
10.1016/j.scriptamat.2018.03.005
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Twinning-stress correlation of a basal textured Mg-Al-Zn alloy was studied after impact test. The deformed microstructure was characterized using electron backscattered diffraction (EBSD) while the stress analysis during impact process was modeled by finite element method. Results showed that both the tension and compression region of the sample were dominated by high density deformation twins. Various twinning modes and variant selections were determined by trace method and misorientation analysis. Preliminary analysis suggested that some rare twinning modes such as {10(1)over-bar1}-{10(1)over-bar1} and {10(1)over-bar2}-{10(1)over-bar2} double twinning likely occurred after deformation. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：87 / 91
页数：5
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