Evaluation of Microhardness, Tribological Properties, and Corrosion Resistance of CrFeNiNbTi High-Entropy Alloy Coating Deposited by Laser Cladding

The microstructure and properties of CrFeNiNbTi HEA coating on 40CrNiMoA steel synthesized by laser cladding were investigated. The CrFeNiNbTi HEA coating had a dendritic microstructure, whose volume ratio of dendrite (VRD) decreased linearly with the increasing distance from the surface. The refractory element Nb preferred to dissolve into the dendritic solid solution with FCC lattice structure, and Ti promoted the precipitation of the Laves...