Title: A disclination-based model for grain subdivision and its impact on the macroscopic mechanical behaviour of f.c.c. polycrystals
Authors: Seefeldt, Marc ×
Delannay, Laurent
Peeters, Bart
Aernoudt, Etienne
Van Houtte, Paul #
Issue Date: Sep-2001
Publisher: E d p sciences
Series Title: Journal de physique iv vol:11 issue:PR5 pages:127-134
Abstract: An integrated substructure and texture evolution model is used to study grain subdivision and anisotropic work-hardening at f.c.c. materials under cold plane strain deformation. The substructure development is modelled with the help of coupled evolution equations for dislocation and disclination densities, separately for the twelve f.c.c. slip systems and six cell wall and fragment boundary families. The texture development is modelled with the help of a full constraints Taylor code. The couplings between the two consist in the slip rates calculated by the Taylor algorithm and driving the evolution equations, and in the critical resolved shear stresses calculated from the defect densities and entering into the Taylor code. The model is used to predict the subdivision patterns depending on the grain orientation as well as the substructure contribution to the anisotropy in the macroscopic mechanical response.
ISSN: 1155-4339
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Mechanical Metallurgy Section (-)
Department of Materials Engineering - miscellaneous
Biochemistry Section (Medicine) (-)
× corresponding author
# (joint) last author

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