TY - GEN
T1 - Simulation on nanostructured metals based on multiscale crystal plasticity considering effect of grain boundary
AU - Aoyagi, Yoshiteru
AU - Shimokawa, Tomotsugu
AU - Shizawa, Kazuyuki
AU - Kaji, Yoshiyuki
PY - 2012
Y1 - 2012
N2 - Ultrafine-grained metals whose grain size is less than one micron have attracted interest as high strength materials. Whereas nanostructured metals produced by severe plastic deformation express remarkably peculiar behavior in both material and mechanical aspects, its mechanism has been clarified by neither experimental nor computational approaches. In this study, we develop a multiscale crystal plasticity model considering an effect of grain boundary. In order to express release of dislocation from grain boundaries, information of misorientation is introduced into a hardening law of crystal plasticity. In addition, carrying out FE simulation for FCC polycrystal, the stress-strain responses such as increase of yield stress due to existence of grain boundary are discussed. We investigate comprehensively the effect of dislocation behavior on the material property of nanostructured metal.
AB - Ultrafine-grained metals whose grain size is less than one micron have attracted interest as high strength materials. Whereas nanostructured metals produced by severe plastic deformation express remarkably peculiar behavior in both material and mechanical aspects, its mechanism has been clarified by neither experimental nor computational approaches. In this study, we develop a multiscale crystal plasticity model considering an effect of grain boundary. In order to express release of dislocation from grain boundaries, information of misorientation is introduced into a hardening law of crystal plasticity. In addition, carrying out FE simulation for FCC polycrystal, the stress-strain responses such as increase of yield stress due to existence of grain boundary are discussed. We investigate comprehensively the effect of dislocation behavior on the material property of nanostructured metal.
KW - Crystal plasticity
KW - Dislocation
KW - Grain boundary
KW - Nanostructured metals
KW - Size effect
UR - http://www.scopus.com/inward/record.url?scp=84856138131&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84856138131&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/MSF.706-709.1751
DO - 10.4028/www.scientific.net/MSF.706-709.1751
M3 - Conference contribution
AN - SCOPUS:84856138131
SN - 9783037853030
T3 - Materials Science Forum
SP - 1751
EP - 1756
BT - THERMEC 2011
PB - Trans Tech Publications Ltd
T2 - 7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011
Y2 - 1 August 2011 through 5 August 2011
ER -