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Nonequilibrium phase diagram for the serration statistics during slow deformation of refractory high-entropy alloys
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Nonequilibrium phase diagram for the serration statistics during slow deformation of refractory high-entropy alloys

Ming-Wei Liu, Wei-Chen Hsu, Tzu-Yang Chiang, Che-Wei TsaiKarin A. Dahmen
Scientific Reports, 卷.15(1), 7194
12/2025
PMID: 40021756

摘要

Multidisciplinary
Diverse slip behaviors are observed in HfNbTaTiZr refractory high-entropy alloy during tensile tests. Slow-avalanche and fast-runaway phases are identified by analyzing scaling relationships among slip statistics. Slow avalanches display a scaling collapse in temporal shapes, aligning with mean-field slip theory, while system-spanning fast-runaway avalanches show a Gaussian shape, indicating rapid nucleation due to dynamic weakening. Through time scale analysis, we construct a nonequilibrium phase diagram elucidating the influence of temperature and strain rate variations on solute-dislocation interaction.

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https://doi.org/10.1038/s41598-025-90338-z檢視
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