期刊
SCRIPTA MATERIALIA
卷 67, 期 7-8, 页码 700-703出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2012.06.036
关键词
Magnesium; Crystal growth; Compression test; Transmission electron microscopy; Plastic deformation
类别
资金
- General Motors/Brown University Collaborative Research Laboratory on Computational Materials Science
Compression of single-crystal magnesium along the [0001] direction at room temperature confirmed a high yield stress, high work-hardening and minimal plastic deformation prior to fracture. Post-deformation examination revealed the dominance of c + a slip; straight and zig-zag dislocations and numerous fine dislocation loops, all with the < 11-23 > Burgers vector, were observed. These are thought to be responsible for the high work-hardening behavior. Extension and contraction twins were present, but only occasionally. Extension twins were shown to occur during unloading. (c) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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