Comparative study on radiation resistance of WTaCrV high-entropy alloy and tungsten in helium-containing conditions.

ABSTRACT: W and W-based high-entropy alloys are promising candidates for plasma-facing materials in fusion reactors. While irradiation studies on W have revealed a tendency for helium (He) bubble formation and radiation-induced defects, investigations of WTaCrV high-entropy alloy (HEA) have demonstrated superior radiation resistance, whether under He⁺ irradiation or heavy ion irradiation. To assess material performance under conditions relevant to fusion reactors-characterized by fast neutrons and gas production from transmutation reactions-complex irradiation environments need to be modeled. Using classical molecular dynamics simulations, we examined defect evolution in W and equimolar WTaCrV HEA with and without preexisting He atoms under overlapping displacement cascades up to 0.2 displacements p

SUBMITTER: Esfandiarpour A 

PROVIDER: S-EPMC12497879 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature