Dislocation-based crystal plasticity FE analysis for kink band formation in Mg-based LPSO phase considering higher-order stress

Yuichi Kimura, Ryo Ueta, Kazuyuki Shizawa

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

An FE analysis has been performed for a single crystal of long-period stacking ordered phase on the basis of the dislocation-based crystal plasticity model considering higher-order stress. The mesh dependence on the kink band formation has been discussed from the viewpoint of the strain gradient and size effect. Then, it is shown that the mesh dependence of kink deformation in the FE analysis can be removed even when the scale ratio is relatively small. Moreover, it is indicated that the disclination quadrupole structure in the kink band can be expressed qualitatively by use of the incompatibility of crystal slip.

Original languageEnglish
Pages (from-to)1825-1832
Number of pages8
JournalProcedia Manufacturing
Volume15
DOIs
Publication statusPublished - 2018 Jan 1
Event17th International Conference on Metal Forming, METAL FORMING 2018 - Toyohashi, Japan
Duration: 2018 Sep 162018 Sep 19

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Dislocations (crystals)
Plasticity
Crystals
Single crystals

Keywords

  • Crystal plasticity
  • Dislocation
  • Finite element method
  • Magnesium alloy
  • Plasticity

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Artificial Intelligence

Cite this

Dislocation-based crystal plasticity FE analysis for kink band formation in Mg-based LPSO phase considering higher-order stress. / Kimura, Yuichi; Ueta, Ryo; Shizawa, Kazuyuki.

In: Procedia Manufacturing, Vol. 15, 01.01.2018, p. 1825-1832.

Research output: Contribution to journalConference article

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AB - An FE analysis has been performed for a single crystal of long-period stacking ordered phase on the basis of the dislocation-based crystal plasticity model considering higher-order stress. The mesh dependence on the kink band formation has been discussed from the viewpoint of the strain gradient and size effect. Then, it is shown that the mesh dependence of kink deformation in the FE analysis can be removed even when the scale ratio is relatively small. Moreover, it is indicated that the disclination quadrupole structure in the kink band can be expressed qualitatively by use of the incompatibility of crystal slip.

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