Low-temperature mechanical properties and thermally activated plasticity parameters of the CrMnFeCoNi2Cu high entropy alloy

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Abstract

The mechanical properties of a high-entropy CrMnFeCoNi2Cu alloy with an FCC lattice have been studied in a broad temperature range (4.2-350 K). The microhardness and Young's modulus were measured at 300 K for two structural states. The temperature dependences of the yield strength, deforming stress, and strain rate sensitivity have been obtained. It was found that a high-strength state is realized in the alloy while maintaining high plasticity, over the entire temperature range. Empirical estimates of microscopic plasticity parameters and internal and effective stresses have been obtained using the thermally activated deformation model.

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Tabachnikova, E. D., Shapovalov, Y. O., Smirnov, S. N., Gorban’, V. F., Krapivka, N. A., & Firstov, S. A. (2020). Low-temperature mechanical properties and thermally activated plasticity parameters of the CrMnFeCoNi2Cu high entropy alloy. Low Temperature Physics, 46(9), 958–968. https://doi.org/10.1063/10.0001720

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