Exploring CuCrFeVTi system to produce high entropy alloys for high heat flux applications

•Cu-high entropy alloys for fusion applications have been produced by arc-melting.•The materials present a dendritic microstructure, with Cu and Ti segregation.•A distribution of Cu nanoparticles is formed inside the dendrites.•Massive nanoindentation, statistical analysis and BSE images have been combined.•The H and E of each phase and their effect into the microhardness were determined.