Method for laser cladding of Ti-Al-Co eutectic composite reinforced phase on titanium alloy

The invention relates to the technical field of metal surface modification and high-temperature coating preparation, in particular to a method for cladding a eutectic composite reinforced phase on a titanium alloy laser surface, which comprises the following steps: respectively adding TiN, SiC and ZrO2 different types of reinforced phase powder into Ti-Al-Co powder to form reinforced phase-containing alloy powder, and presetting the reinforced phase-containing alloy powder on the titanium alloy surface to form a preset coating; and the preset coating is subjected to cladding treatment through a laser cladding machine under the protection of high-purity argon, and the titanium alloy with the eutectic cladding layer is obtained. Through experimental analysis of mechanical properties and high-temperature oxidation resistance of a Ti-Al-Co/TiN, Ti-Al-Co/SiC and Ti-Al-Co/ZrO2 eutectic composite cladding layer generated by laser cladding, the improvement effect of the eutectic structure on the plasticity and toughn