Powder and preparation technology for laser high-entropy alloying of copper single-element based alloy

The invention relates to powder and a preparation technology for laser high-entropy alloying of a copper single-element based alloy , and belongs to the technical field of surface engineering. The novel alloyed powder and the technique for excellent property high-entropy alloy coating preparation on a copper alloy surface are provided. The alloyed powder comprises Fe, Co, Cr and Al in equal molar ratios. By the adoption of an appropriate laser irradiation technological parameter, a high-entropy alloying coating with good metallurgical bonding with a copper single element radical alloy base material and an excellent property is prepared through the laser reactive synthesis-surface alloying method. The high-entropy alloying coating comprises five main components, Fe, Co, Cr, Al and Cu. The defect that an original multi-component alloy is prone to generate a lot of brittle phase precipitation is overcome. The phase composition of the alloying coating is a solid solution of simple FCC and BCC structures, the organization is uniform and fine without cracks, the brittleness of a multi-component alloy is reduced greatly, and the application prospect is wide.