TY - GEN
T1 - Modeling and simulation of crystal plasticity based on GN crystal defects for ultrafine-grained metals induced by severe plastic deformation
AU - Oishi, Shingo
AU - Aoyagi, Yoshiteru
AU - Shizawa, Kazuyuki
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2006
Y1 - 2006
N2 - In this study, we apply the densities of geometrically necessary (GN) crystal defects, i.e., GN dislocation and GN incompatibility considering dynamic recovery to tile hardening law of a crystal in order to express almost crystal defects as geometrical quantities. Moreover, the quantitative confirmation process of the generations of subdivisions is proposed, and the information of induced grain is introduced into the strain rate sensitivity. A dislocation-crystal plasticity FE simulation is carried out for large deformation of an FCC polycrystal under plane strain condition. Distributions of crystal defects and crystal orientation in a specimen are visualized and the separation of grains is discussed on the basis of the results obtained here.
AB - In this study, we apply the densities of geometrically necessary (GN) crystal defects, i.e., GN dislocation and GN incompatibility considering dynamic recovery to tile hardening law of a crystal in order to express almost crystal defects as geometrical quantities. Moreover, the quantitative confirmation process of the generations of subdivisions is proposed, and the information of induced grain is introduced into the strain rate sensitivity. A dislocation-crystal plasticity FE simulation is carried out for large deformation of an FCC polycrystal under plane strain condition. Distributions of crystal defects and crystal orientation in a specimen are visualized and the separation of grains is discussed on the basis of the results obtained here.
KW - Crystal plasticity
KW - Dynamic recovery
KW - Geometrically necessary dislocation density
KW - Grain boundary
KW - Incompatibility
KW - Multiscale modeling
KW - Subdivision
UR - http://www.scopus.com/inward/record.url?scp=35248853771&partnerID=8YFLogxK
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U2 - 10.4028/0-87849-985-7.215
DO - 10.4028/0-87849-985-7.215
M3 - Conference contribution
AN - SCOPUS:35248853771
SN - 0878499857
SN - 9780878499854
T3 - Materials Science Forum
SP - 215
EP - 220
BT - Nanomaterials by Severe Plastic Deformation, NanoSPD3 - Proceedings of the 3rd International Conference on Nanomaterials by Severe Plastics Deformation
PB - Trans Tech Publications Ltd
T2 - 3rd International Conference on Nanomaterials by Severe Plastics Deformation, NanoSPD3
Y2 - 22 September 2005 through 26 September 2005
ER -