Abstract
In recent years, non-dilute random alloys (NDRAs) have been gaining interest as promising materials for high-temperature structural applications due to their unique ability to form solid solution phases that portray exceptional mechanical properties and resilience under extreme conditions. This study deals with the effects of chemical short-range order (CSRO) on selected material properties including lattice parameters, lattice distortion (LD), unstable stacking fault energy (USFE), and melting points (MPs). The main body of this study is on 21 ternary alloys, where the interatomic interactions are described by an embedded-atom method potential. Our results demonstrate that random structures generally exhibit larger lattice parameters and greater LD compared to CSRO structures, while CSRO structures possess higher USFEs and MPs. Furthermore, there is no discernible pattern in the segregation of the same and different atom pairs in the NDRAs, as revealed by the notably varying local ordering or segregation for most of them. Last, the effects of interatomic potential and the number of constituent elements are studied using other interatomic potentials and/or non-ternary systems, suggesting that our finding is consistent across different potentials/alloys.
Published Version
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