Ontology highlight
ABSTRACT:
SUBMITTER: Chen B
PROVIDER: S-EPMC7368262 | biostudies-literature | 2020 Jul
REPOSITORIES: biostudies-literature
Proceedings of the National Academy of Sciences of the United States of America 20200629 28
Atomistic simulations of dislocation mobility reveal that body-centered cubic (BCC) high-entropy alloys (HEAs) are distinctly different from traditional BCC metals. HEAs are concentrated solutions in which composition fluctuation is almost inevitable. The resultant inhomogeneities, while locally promoting kink nucleation on screw dislocations, trap them against propagation with an appreciable energy barrier, replacing kink nucleation as the rate-limiting mechanism. Edge dislocations encounter a ...[more]