Abstract Thermodynamics-kinetics of twinning/martensitic transformation during adiabatic shearing in the Fe50Mn30Co10Cr10 high-entropy alloy was firstly quantitatively analyzed. The results indicated that twins and no martensite e phase were observed within the adiabatic shear band. The critical stress for martensitic transformation was greater than the applied shear stress after 35.2 µs (72.4 µs whole deformation time), and the driving force for e→γ phase transformation was increasing with increased deformation time, so the original e phase decreased and finally disappeared. Before 38.3 µs, the critical stress for twinning was lower than the applied shear stress, and twinning occurred. Therefore, twins were observed.

中文翻译：

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Fe50Mn30Co10Cr10高熵合金绝热剪切过程中孪生/马氏体相变的热力学-动力学

摘要 首次定量分析了Fe50Mn30Co10Cr10高熵合金绝热剪切过程中孪生/马氏体相变的热力学-动力学。结果表明，在绝热剪切带内观察到孪晶和马氏体e相。马氏体相变的临界应力在 35.2 µs（整个变形时间为 72.4 µs）后大于外加剪切应力，并且 e→γ 相变的驱动力随着变形时间的增加而增加，因此原始 e 相减少并最终消失. 在 38.3 µs 之前，孪晶的临界应力低于施加的剪切应力，并且出现了孪晶。因此，观察到双胞胎。