Mesoscopic simulations of plastic deformation

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

卷:309

Article; Proceedings Paper

Devincre, B ; Kubin, LP ; Lemarchand, C ; Madec, R

关键词: simulations;    dislocation patterns;    dislocation dynamics;    cross-slip;   

DOI  :  10.1016/S0921-5093(00)01725-1

来源: Elsevier

【 摘 要 】

This review is focused on recent progress achieved by mesoscopic simulations of plastic deformation. The methods presently available for discretizing the dislocation lines are critically discussed with emphasis on a new lattice-based model. Progress in large-scale simulations is represented by a study on the influence of long range elastic stresses on the formation of dislocation patterns in fee crystals. A hybrid discrete-continuum method that provides an exact treatment of the boundary conditions is described and illustrated by an investigation of the critical conditions for dislocation motion in the channels of gamma/gamma ' superalloys. (C) 2001 Elsevier Science B.V. All rights reserved.

【 授权许可】

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