Small-scale mechanical behavior of a eutectic high entropy alloy.

ABSTRACT: Eutectic high entropy alloys, with lamellar arrangement of solid solution phases, represent a new paradigm for simultaneously achieving high strength and ductility, thereby circumventing this well-known trade-off in conventional alloys. However, dynamic strengthening mechanisms and phase-boundary interactions during external loading remain unclear for these eutectic systems. In this study, small-scale mechanical behavior was evaluated for AlCoCrFeNi_2.1 eutectic high entropy alloy, consisting of a lamellar arrangement of L1₂ and B2 solid-solution phases. The ultimate tensile strength was 1165 MPa with ductility of ~18% and ultimate compressive strength was 1863 MPa with a total compressive fracture strain of ~34%. Dual mode fracture was observed with ductile failure fo

SUBMITTER: Muskeri S 

PROVIDER: S-EPMC7021732 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature