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A misorientation dependent grain boundary yield criterion
Author(s) -
Prahs Andreas,
Bayerschen Eric,
Böhlke Thomas
Publication year - 2015
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201510163
Subject(s) - misorientation , grain boundary , dislocation , yield (engineering) , boundary (topology) , materials science , work (physics) , constant (computer programming) , geometry , plasticity , flow (mathematics) , mathematics , condensed matter physics , mathematical analysis , composite material , physics , thermodynamics , microstructure , computer science , programming language
An equivalent plastic strain gradient theory, cf. [1], is extended by a GB flow rule, that accounts for the misorientation of adjacent grains. In contrast to previous works, the grain boundary (GB) resistance against plastic flow is not treated as a constant parameter. Therefore, in the work at hand, the grain boundary dislocation density (GBD), cf. [2], is used as a measure for geometrical mismatch between all glide system orientations of two adjacent grains. (© 2015 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)