期刊
PHYSICS LETTERS A
卷 384, 期 22, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.physleta.2020.126516
关键词
High-entropy alloys; Stacking fault; Temperature; Molecular dynamics; Tensile strain
Molecular dynamics simulations are performed to study mechanical characteristics and homogeneous plastic inception of CoCrCuFeNi high-entropy alloy at various temperatures under uniaxial tension. It is found that the elastic modulus and ultimate tensile strength increase with temperature decreasing. A notable softening effect is observed at the elastic deformation stage caused by the decrease of the interatomic force gradient. Extrinsic stacking faults and deformation twins are extensively observed, which are formed via intrinsic stacking faults overlap. (C) 2020 Elsevier B.V. All rights reserved.
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