Phase evolution and properties in laser surface alloying of FeCoCrAlCuNi high-entropy alloy on copper substrate

FeCoCrAlCuNix (x = 0.5, 1, 1.5) high-entropy alloy (HEA) coatings were prepared on commercially pure copper (cp Cu) by laser surface alloying of Cu with Fe-Co-Cr-Al-Nix powder, aiming at improving wear and corrosion resistance. Constituent phases, microstructure, hardness, wear and corrosion resistance of the coatings were investigated using XRD, SEM, microhardness tester, friction-wear tester and potentiodynamic polarization measurements,...