期刊
SCRIPTA MATERIALIA
卷 66, 期 10, 页码 761-764出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2012.01.061
关键词
Atomic simulation; Plastic deformation; Yield phenomena; Dislocations; Grain boundary defects
类别
资金
- US Department of Energy, Office of Basic Energy Sciences, Materials Sciences and Engineering Division
- Office of Fusion Energy Sciences
- Ministry of Education, Science and Culture [17002009, 18686077, 15106015]
- Grants-in-Aid for Scientific Research [17002009, 15106015, 18686077, 21246142] Funding Source: KAKEN
The anisotropic mobility of hexagonal dislocation networks (HDNs) in a series of (1 (1) over bar 0) twist boundaries under applied shear stress has been studied at the atomic scale in alpha-iron. A strong angular effect on the HDN mobility is found to be correlated with the dislocation core structure. The vector form of the Orowan equation and differential displacement maps of dislocation cores are used to account for the HDN behavior under loading. Published by Elsevier Ltd. on behalf of Acta Materialia Inc.
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