Simulation on nanostructured metals based on multiscale crystal plasticity considering effect of grain boundary

Yoshiteru Aoyagi, Tomotsugu Shimokawa, Kazuyuki Shizawa, Yoshiyuki Kaji

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationTHERMEC 2011
PublisherTrans Tech Publications Ltd
Pages1751-1756
Number of pages6
ISBN (Print)9783037853030
DOIs
Publication statusPublished - 2012 Jan 1
Event7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011 - Quebec City, QC, Canada
Duration: 2011 Aug 12011 Aug 5

Publication series

NameMaterials Science Forum
Volume706-709
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Other

Other7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011
CountryCanada
CityQuebec City, QC
Period11/8/111/8/5

Keywords

  • Crystal plasticity
  • Dislocation
  • Grain boundary
  • Nanostructured metals
  • Size effect

ASJC Scopus subject areas

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

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  • Cite this

    Aoyagi, Y., Shimokawa, T., Shizawa, K., & Kaji, Y. (2012). Simulation on nanostructured metals based on multiscale crystal plasticity considering effect of grain boundary. In THERMEC 2011 (pp. 1751-1756). (Materials Science Forum; Vol. 706-709). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/MSF.706-709.1751