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Competing yielding mechanisms in Cantor alloy nanopillars
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DOI：10.1016/j.intermet.2026.109394.png)
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Abstract
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• Yield onset is governed by dislocation nucleation or retained-defect propagation. • Size and short-range order control the post-relaxation defect state. • Orientation selects twinning or slip via leading/trailing Shockley partials. • Higher strain rates raise peak stress by limiting plastic relaxation. • Composition changes peak stress through unstable fault-energy barriers.
Keywords:
Multi-principal element alloys
Cantor alloy
Nanopillar
Molecular dynamics
Short-range order
Dislocation mechanisms
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