A triple-scale crystal plasticity simulation on yield behavior of annealed FCC fine-grained metals

Eisuke Kurosawa, Yoshiteru Aoyagi, Yuichi Tadano, Kazuyuki Shizawa

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

In this study, the conventional Bailey-Hirsch's relationship is extended in order to express the increase of critical resolved shear stress due to the lack of dislocation lines in a grain. This model is introduced into a triple-scale crystal plasticity model based on geometrically necessary crystal defects and the homogenization method. A FE simulation is carried out based on the proposed model for FCC polycrystals with different grain sizes. It is numerically predicted that yield behavior of fine-grained metals depends on the initial dislocation density and the initial grain size. Furthermore, yield point drop that is observed in annealed FCC fine-grained metal can be reproduced.

本文言語English
ホスト出版物のタイトルMaterials Science Forum - Nanomaterials by Severe Plastic Deformation 4 - 4th International Conference on Nanomaterials by Severe Plastic Deformation
出版社Trans Tech Publications Ltd
ページ1027-1032
ページ数6
ISBN(電子版)978-0-87849-360-9
DOI
出版ステータスPublished - 2008 1 1
イベント4th International Conference on Nanomaterials by Severe Plastic Deformation - Goslar, Germany
継続期間: 2008 8 182008 8 22

出版物シリーズ

名前Materials Science Forum
584-586 PART 2
ISSN(印刷版)0255-5476
ISSN(電子版)1662-9752

Other

Other4th International Conference on Nanomaterials by Severe Plastic Deformation
CountryGermany
CityGoslar
Period08/8/1808/8/22

ASJC Scopus subject areas

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

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