Effect of VC Addition on Microstructure and Properties of Laser Cladding Fe₅₀Mn₃₀Cr₁₀Co₁₀ High-Entropy Alloy Coating

Fe_50-xMn₃₀Cr₁₀Co₁₀(VC)_x (x=0, 1, 3, atomic fraction/%) high-entropy alloy coatings were prepared on Q235 steel plate surface by laser cladding technique. The effect of VC addition on the micromorphology, phase composition, hardness, wear resistance and corrosion resistance of the coating was studied. The results show that the high-entropy alloy coatings with three VC additions were well bonded with the substrate, and there were only a few defects such as holes in the coatings. The three coatings were all composed of solid solution phases with a face-centered cubic structure. With increasing VC addition, the structure of the high-entropy alloy coating was refined, and the microhardness increased. The addition of VC could improve both wear resistance and corrosion resistance of Fe₅₀Mn₃₀Cr₁₀Co₁₀ high-entropy alloy coating, and the more the VC was added, the better the wear resistance and corrosion resistance were.