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Prediction of intragranular strains in metallic polycrystals with a two‐level homogenisation approach: Influence of dislocation microstructure on the mechanical behaviour
Author(s) -
Gloaguen D.,
François M.
Publication year - 2006
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200521316
Subject(s) - materials science , plasticity , dislocation , crystallite , anisotropy , microstructure , deformation (meteorology) , composite material , metallurgy , physics , quantum mechanics
A two‐level homogenisation approach is applied to the micro‐mechanical modelling of the elasto‐plasticity of polycrystalline materials during various strain‐path changes. The model is tested by simulating the development of intragranular strains during different complex loads. Mechanical tests measurements are used as a reference in order to validate the model. The anisotropy of plastic deformation in relation to the evolution of the dislocation structure is analysed. The results demonstrate the relevance of this approach for FCC polycrystals. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)