Microstructure evolution of a novel low-density Ti-Cr-Nb-V refractory high entropy alloy during cold rolling and subsequent annealing

Abstract

In this work, we report structure and mechanical properties of a novel non-equiatomic Ti1.89CrNbV0.56 alloy produced by vacuum arc melting. The density of the alloy was 6.17 g/cm3. In the as-cast condition, the alloy had a single-phase bcc structure enabling room temperature deformation in compression to ε>50% or cold-rolling to a thickness strain of 80%. Rolling resulted in the formation of a dislocation substructure and development of kink and shear bands