The Effects of Annealing at Different Temperatures on Microstructure and Mechanical Properties of Cold-Rolled Al0.3CoCrFeNi High-Entropy Alloy

In this work, cold-rolling was utilized to induce a high density of crystal defects in Al0.3CoCrFeNi high-entropy alloys. The effects annealing temperature on static recrystallization, precipitation behavior and mechanical properties were investigated. With increasing from 590 °C 800 °C, the area fraction recrystallized region increases 26.9% 93.9%. Cold-rolling deformation largely promotes B2 phases during annealing, characteristics precipitates are linked recrystallization level. coarse equiaxed exist fine elongated occupy non-recrystallized region. Combined use can remarkably enhance strength toughness. A partially microstructure cold-rolled sample annealed at 700 exhibits better combination toughness than fully °C. Finally, related mechanisms discussed.