Dislocation Structure of Grain Boundaries in Single Crystals Deforming in Simple Shear

A model for the formation of grain boundaries in single crystals having a single active slip system for the case of plane strain simple shear is proposed. It is shown that non‐convexity of the condensed energy gives rise to the formation of a laminate structure, where sharp interfaces between lamina...

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Bibliographic Details
Published in:Proceedings in applied mathematics and mechanics Vol. 15; no. 1; pp. 319 - 320
Main Authors: Koster, Michael, Le, Khanh Chau
Format: Journal Article
Language:English
Published: Berlin WILEY-VCH Verlag 01-10-2015
WILEY‐VCH Verlag
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Summary:A model for the formation of grain boundaries in single crystals having a single active slip system for the case of plane strain simple shear is proposed. It is shown that non‐convexity of the condensed energy gives rise to the formation of a laminate structure, where sharp interfaces between laminate layers are interpreted as grain boundaries. Based on these results the dislocation structure of the boundaries is determined introducing a transition zone between laminate layers, where smooth functions of displacement and plastic slip connect adjacent layers. (© 2015 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Bibliography:ark:/67375/WNG-L7266149-8
istex:3DD3FED22A373B6EF0FE8BFEA8F5D36D8B4D1B39
ArticleID:PAMM201510150
ISSN:1617-7061
1617-7061
DOI:10.1002/pamm.201510150