Issues in the coarse-graining of dislocation energetics and dynamics

被引：13
|
作者：
Rickman, JM
LeSar, R
机构：
[1] Lehigh Univ, Dept Mat Sci & Engn, Whitaker Lab 224, Bethlehem, PA 18015 USA
[2] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA
来源：
SCRIPTA MATERIALIA | 2006年 / 54卷 / 05期
关键词：
dislocation microstructures; stochastic dynamics; coarse-graining;
D O I：
10.1016/j.scriptamat.2005.11.030
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We discuss the challenges and controversies involved in obtaining a coarse-grained description of dislocation energetics and dynamics. We start by outlining the structural and dynamical considerations, specific to dislocations, that are associated with homogenization. We then briefly review several existing strategies. Particular attention is paid to the role of dislocation substructure.. critical in determining mechanical response, in a coarse-grained representation. Finally, promising future research directions are highlighted. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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页码：735 / 739
页数：5
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