Modeling and simulation of crystal plasticity based on GN crystal defects for ultrafine-grained metals induced by severe plastic deformation

Shingo Oishi, Yoshiteru Aoyagi, Kazuyuki Shizawa

研究成果: 書籍の章/レポート/Proceedings会議への寄与査読

抄録

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.

本文言語英語
ホスト出版物のタイトルNanomaterials by Severe Plastic Deformation, NanoSPD3 - Proceedings of the 3rd International Conference on Nanomaterials by Severe Plastics Deformation
出版社Trans Tech Publications Ltd
ページ215-220
ページ数6
ISBN(印刷版)0878499857, 9780878499854
DOI
出版ステータス出版済み - 2006
イベント3rd International Conference on Nanomaterials by Severe Plastics Deformation, NanoSPD3 - Fukuoka, 日本
継続期間: 2005 9月 222005 9月 26

出版物シリーズ

名前Materials Science Forum
503-504
ISSN(印刷版)0255-5476
ISSN(電子版)1662-9752

会議

会議3rd International Conference on Nanomaterials by Severe Plastics Deformation, NanoSPD3
国/地域日本
CityFukuoka
Period05/9/2205/9/26

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