Unconventional dislocation starvation behavior of medium-entropy alloy single crystal pillars containing pre-existing dislocations

Luling Wang,Bin Liu,Jianqiu Zhou,Yang Cao,Feng Zhang,Yonghao Zhao

Journal of Materials Science & Technology（2023）

Cited 1|Views9

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Abstract

•Short-range ordering poses strong effect in preventing dislocation starvation.•Pre-existing dislocations influence the size effect.•Dislocation locks induces dislocation multiplication in small-sized CrCoNi crystal.•Recurrent local energy barriers lead to intermittent dislocation glide.

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Key words

Molecular dynamics,Medium entropy alloy,Single crystal pillar,Dislocation starvation,Chemical short-range order,Size effect

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