Quasicontinuum Models of Interfacial Structure and Deformation

Preprint

9 July 1997

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/9707094

Abstract

Microscopic models of the interaction between grain boundaries (GBs) and both dislocations and cracks are of importance in understanding the role of microstructure in altering the mechanical properties of a material. A recently developed mixed atomistic and continuum method is extended to examine the interaction between GBs, dislocations and cracks. These calculations elucidate plausible microscopic mechanisms for these defect interactions and allow for the quantitative evaluation of critical parameters such as the stress to nucleate a dislocation at a step on a GB and the force needed to induce GB migration.

Keywords

DEFORMATION MICROSCOPIC
QUASICONTINUUM MODELS
MECHANICAL PROPERTIES
INTERFACIAL STRUCTURE
MICROSCOPIC MODELS
GRAIN BOUNDARIES
DISLOCATIONS
MIGRATION
ATOMISTIC

All Related Versions

Version 1, 1997-07-09, ArXiv
Published version: Physical Review Letters, 80 (4), 742.

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