Nanoscale Indentation-Induced Crystal Plasticity in CrCoNi Medium-Entropy Alloys Containing Short-Range Order.

ABSTRACT: CrCoNi medium-entropy alloys (MEAs), characterised by their high configurational entropies, have become a research hotspot in materials science. Recent studies have indicated that MEAs exhibit short-range order (SRO), which affects their deformation mechanisms. In this study, the micro-mechanisms of SRO within the framework of mesoscale continuum mechanics are mathematically evaluated using an advanced, non-local crystal plasticity constitutive framework. Furthermore, a crystal plasticity model considering the impact of SRO on slip is established. By combining nanoindentation simulations and multi-level grain model tensile simulations, the load-displacement and stress-strain curves demonstrated that the presence of SRO increases the hardness of MEAs. More specifically, considering the dist

SUBMITTER: Ren M 

PROVIDER: S-EPMC11642976 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature