期刊
SCRIPTA MATERIALIA
卷 64, 期 8, 页码 693-696出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2010.11.034
关键词
Magnesium alloys; First-principles electron theory; Mechanical properties; Generalized stacking-fault energies
类别
资金
- National Natural Science Foundation of China [50890174, 50971088]
Alloying effects due to Li and Al were examined in terms of generalized stacking-fault energies (GSFEs) associated with basal planes of hexagonal close-packed Mg. The GSFE profiles were obtained using a first-principles technique in combination with climbing-image nudged elastic band methods. Our results show that Li alloying can facilitate dislocation-mediated processes while sequential faulting across basal planes becomes favorable with Al alloying. Such a difference is attributed to the fact that the two alloying elements tend to form different types of bond critical points in Mg. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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