Abstract: Disclosed are a high-entropy alloy (HEA) coating and a preparation method and use thereof. Laser cladding is conducted with an HEA powder to obtain the HEA coating, where the HEA is a FeCoCrNiAl0.5Ti0.5 alloy, and the HEA includes the following chemical components in atomic percentage: Al: 10.01% to 12.30%, Co: 18.1% to 22.5%, Cr: 18.05% to 20.12%, Fe: 18.77% to 21.02%, Ni: 19.21% to 20.99%, and Ti: 8.43% to 11.5%. The HEA material with high hardness and wear resistance provided by the present disclosure is suitable for laser cladding of a surface of a precision mold, an offshore component, or a drilling rod. A powder is prepared from the above alloy components and then prepared into a corresponding HEA coating with high strength, high hardness, and prominent wear resistance through laser cladding. The material has prominent weldability and is a special nickel-based HEA material suitable for laser additive manufacturing.

Abstract: Disclosed are a high-entropy alloy (HEA) coating and a preparation method and use thereof. Laser cladding is conducted with an HEA powder to obtain the HEA coating, where the HEA is a FeCoCrNiAl0.5Ti0.5 alloy, and the HEA includes the following chemical components in atomic percentage: Al: 10.01% to 12.30%, Co: 18.1% to 22.5%, Cr: 18.05% to 20.12%, Fe: 18.77% to 21.02%, Ni: 19.21% to 20.99%, and Ti: 8.43% to 11.5%. The HEA material with high hardness and wear resistance provided by the present disclosure is suitable for laser cladding of a surface of a precision mold, an offshore component, or a drilling rod. A powder is prepared from the above alloy components and then prepared into a corresponding HEA coating with high strength, high hardness, and prominent wear resistance through laser cladding. The material has prominent weldability and is a special nickel-based HEA material suitable for laser additive manufacturing.