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Metals and Materials International

, Volume 25, Issue 3, pp 641–656 | Cite as

Mesoscale Simulation of Deformation Behaviors of E-form and AZ31 Mg Alloys During Ex-Situ Mini-V-Bending Tests

  • Jaiveer Singh
  • Min-Seong Kim
  • Joo-Hee Kang
  • Shi-Hoon ChoiEmail author
Article
  • 203 Downloads

Abstract

Mesoscale simulations based on the resolved shear stress (RSS) analysis and the crystal plasticity finite element method (CPFEM) simulations were used to elucidate the deformation behaviors of E-form and AZ31 magnesium (Mg) alloys and the evolution of tension twin (TTW) and compression twin (CTW) variants during mini-V-bending. RSS analysis, which is based on the Schmid tensor, was used to calculate the type of twin variants and the number of TTW and CTW variants that evolved in the deformed Mg alloys. However, RSS analysis considers neither the critical resolved shear stress (CRSS) of twin systems nor the interaction with neighboring grains, and it failed to accurately predict the twin behaviors of deformed grains. This study simulated the spatial distributions of the relative activities of different deformation modes, accumulated twin fractions, accumulated plastic strains, and effective stresses via CPFEM. Compared with the RSS analysis, CPFEM simulation precisely explained the twin behaviors observed in both E-form and AZ31 Mg alloys.

Keywords

Mg alloys V-bending Twinning RSS CPFEM 

Notes

Acknowledgements

This research was supported by the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT (NRF-2016M3C1B5906955) and the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2014R1A6A1030419).

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Copyright information

© The Korean Institute of Metals and Materials 2018

Authors and Affiliations

  • Jaiveer Singh
    • 1
  • Min-Seong Kim
    • 1
  • Joo-Hee Kang
    • 2
  • Shi-Hoon Choi
    • 1
    Email author
  1. 1.Department of Printed Electronics EngineeringSunchon National UniversitySuncheonRepublic of Korea
  2. 2.Materials Modeling and Characterization DepartmentKorea Institute of Materials ScienceChangwonRepublic of Korea

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