Effect of Y on Microstructure and Properties of Al0.8FeCrCoNiCu0.5 High Entropy Alloy Coating on 5083 Aluminum by Laser Cladding

To improve the surface properties of 5083 aluminum, Al0.8FeCrCoNiCu0.5Yx (x = 0, 0.05, 0.1, and 0.2) high-entropy alloy coatings were prepared by laser cladding. The phase structure microstructure characterized XRD SEM. tribological coating tested a friction wear tester. An electrochemical workstation corrosion resistance coating. results show that when Y content is less than 0.2, in FCC1, BCC1, BCC2 phases. When added to appears rich phase. With increased content, hardness can increase. average Y0, Y0.05, Y0.1, Y0.2 are 479HV0.2, 517HV0.2, 532HV0.2, 544HV0.2, respectively. Microstructure evolution leads an increase effect on consistent with hardness. Al0.8FeCrCoNiCu0.5Y0.2 has lowest rate, at 8.65 × 10−6 mm3/Nm. current density Al0.8FeCrCoNiCu0.5Y0.05 Al0.8FeCrCoNiCu0.5Y0.1 order 10−8, which Al0.8FeCrCoNiCu0.5. performance each component superior substrate.