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: Conference contribution

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English
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Published - 2006
イベント3rd International Conference on Nanomaterials by Severe Plastics Deformation, NanoSPD3 - Fukuoka, Japan
継続期間: 2005 9 222005 9 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

Other

Other3rd International Conference on Nanomaterials by Severe Plastics Deformation, NanoSPD3
CountryJapan
CityFukuoka
Period05/9/2205/9/26

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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