Dislocation Structure of Grain Boundaries in Single Crystals Deforming in Simple Shear |
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Authors: | Michael Koster Khanh Chau Le |
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Affiliation: | Institute of Mechanics of Materials, Ruhr-Universität Bochum, D-44780 Bochum, Germany |
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Abstract: | 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) |
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