Low-temperature mechanical properties and thermally activated plasticity parameters of the CrMnFeCoNi<sub>2</sub>Cu high entropy alloy
Mechanical properties of the CrMnFeCoNi2Cu high entropy fcc alloy have been studied in a wide range of low temperatures (4.2-350 K). Values of microhardness and Young’s modulus at 300 K have been measured for two structural states. Temperature dependencies of the yield strength, deforming stress, and strain rate sensitivity have been obtained. It was established that in all the temperature range high strength state is realizing with significant plasticity remained. Empirical estimates have been made of the microscopical parameters of plasticity and internal stresses values in the framework of thermally activated deformation models.