Atomic Modeling and Simulation of AlCoCrCuFeNi Multi-principal-element Alloy

摘要

Atomic structure model of bulk AlCoCrCuFeNi multi-principal-element alloy was build by following the principle of maximum entropy.Morse pair-potentials to describe the inter-atomic interaction among neighboring atoms in the alloy were generated directly from first-principles calculations within density-functional theory.Molecular statics simulation was carried out to achieve the optimized atomic configuration of AlCoCrCuFeNi alloy.The results show that the crystallographic behavior in lattice structure observed experimentally is just caused by the average of the disordered atomic position and composition in wide range since there is neither short-range nor long-range order in the local atomic arrangement of this kind of materials.