Design and deformation characteristics of single-phase Co-Cr-Fe-Ni-V high entropy alloy

•Design and development of Co25Cr20Fe25Ni25V5 FCC high entropy alloy (HEA) using ICME approach.•Understanding the segregation behavior of FCC HEA using phase field simulation.•Formation of the deformation bands in the lower temperature range 1073–1173 K causes hardening.•Observation of annealing twin in FCC HEA during deformation in the high temperature range 1273–1373 K. [Display omitted] In the present study, using ICME approach, the development of Co-Cr-Fe-Ni-V based single-phase FCC high entropy alloy (HEA) has been explored. The simulation guided composition was arc melted and verified using microstructure characterization. The as-cast sample was subjected to deformation at a strain rate of 0.1 s−1in the temperature range of 1073–1373 K. The flow stress behavior in this temperature range could be correlated with the evolution of microstructure using EBSD. Based on these results, the deformation behavior of the alloy at elevated temperature is rationalized. The current study realizes the ICME approach to develop novel single-phase FCC HEA.