Effects of deformation and annealing on the microstructures and properties of a nonequiatomic Co29Cr29Fe29Ni12.5W0.5 high-entropy alloy

Nonequiatomic Co29Cr29Fe29Ni12.5W0.5 high-entropy alloys (HEAs) were prepared by vacuum induction melting and subsequent mechanical processing. The HEA with face-centered cubic and few hexagonal close-packed structure phases exhibited outstanding mechanical properties. After annealing at 725 °C, the yield strength and fracture elongation were 1.13 GPa and 24.3%, respectively. The outstanding mechanical properties were attributed to the addition...