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Image Forces on 3D Dislocation Structures in Crystals of Finite Volume

Published online by Cambridge University Press:  10 February 2011

A. El-Azab
A. El-Azab*
Affiliation:
Pacific Northwest National Laboratory, MSIN k5-26, 902 Battelle Boulevard, P.O. Box 999, Richland, WA 99352, Anter.El-Azab@pnl.gov
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Abstract

The present work aims at studying the image stress and image Peach-Koehler force fields for three-dimensional dislocation configurations in a single crystal of finite volume. It is shown that the image stress field is significant within the entire crystal volume, and that the image Peach-Koehler force can be of the same order of magnitude as the direct interaction force calculated from the infinite domain solution. The results demonstrate that image stress gives rise to long-range interaction forces that are important in meso-scale dynamics of dislocation structures.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 538: Symposium J – Multiscale Modelling of Materials , 1998 , 107
Copyright
Copyright © Materials Research Society 1999

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