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Discrete dislocation dynamics simulations of twin size-effects in magnesium

  • Haidong Fan (a1) (a2), Sylvie Aubry (a3), A. Arsenlis (a3) and Jaafar A. El-Awady (a1)

Abstract

A dislocation-{101̅2} twin boundary (TB) interaction model was proposed and introduced into discrete dislocation dynamics simulations to study the mechanical behavior of micro-twinned Mg. Strong strain hardening was captured by current simulations, which is associated with the strong TB’s barrier effect. In addition, twin size effects with small TB spacing leading to a strong yield stress, were observed to be orientation dependent. Basal slip orientation produces a strong size effect, while prismatic slip does a weak one.

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Corresponding author

*E-mails: haidongfan8@foxmail.com (H. Fan), jelawady@jhu.edu (J. A. El-Awady)

References

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Keywords

Discrete dislocation dynamics simulations of twin size-effects in magnesium

  • Haidong Fan (a1) (a2), Sylvie Aubry (a3), A. Arsenlis (a3) and Jaafar A. El-Awady (a1)

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