Microstructure and composition dependence of mechanical characteristics of nanoimprinted AlCoCrFeNi high-entropy alloys.

ABSTRACT: Molecular dynamics is applied to explore the deformation mechanism and crystal structure development of the AlCoCrFeNi high-entropy alloys under nanoimprinting. The influences of crystal structure, alloy composition, grain size, and twin boundary distance on the mechanical properties are carefully analyzed. The imprinting load indicates that the highest loading force is in ascending order with polycrystalline, nano-twinned (NT) polycrystalline, and monocrystalline. The change in alloy composition suggests that the imprinting force increases as the Al content in the alloy increases. The reverse Hall-Petch relation found for the polycrystalline structure, while the Hall-Petch and reverse Hall-Petch relations are discovered in the NT-polycrystalline, which is due to the interactions between t

SUBMITTER: Doan DQ 

PROVIDER: S-EPMC8249401 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature