Plastic deformation mechanisms of AZ31 magnesium alloy under high strain rate compression

The twinning and slip activities of AZ31 magnesium alloy sheet at a strain rate of 1 200 s^-1 were investigated. Dynamically mechanical properties of various oriented samples were measured using Split Hopkinson Pressure Bar（SHPB）. Optical microscope observations reveal that the dominant deformation...

Full description

Saved in:
Bibliographic Details
Published in:Transactions of Nonferrous Metals Society of China 2008-10, Vol.18 (5), p.1043-1046
Main Author: 杨勇彪 王富耻 谭成文 吴园园 才鸿年
Format: Article
Language:English
Subjects:
AZ31 magnesium alloy
AZ31镁合金
basal slip, non basal slip
twinning
基部滑移
塑性变形
金属学
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The twinning and slip activities of AZ31 magnesium alloy sheet at a strain rate of 1 200 s^-1 were investigated. Dynamically mechanical properties of various oriented samples were measured using Split Hopkinson Pressure Bar（SHPB）. Optical microscope observations reveal that the dominant deformation mechanism is twinning for 90° oriented sample, and is slip for 45° and 0° oriented samples. TEM analysis for samples at a strain of 0.3% shows that the main deformation mechanisms for 90°, 45° and 0° oriented sample are {1012} 〈 1011 〉 and {1011} 〈 1012 〉 twinning, basal slip and non basal slip, respectively. The main features of the true stress--true strain curves can be explained based on deformation mechanism analysis.
ISSN:1003-6326
DOI:10.1016/S1003-6326(08)60178-8