Titanium alloys possess excellent properties like low density,high specific strength,and corrosion resistance.So,these alloys are widely used in the aerospace.With the development of aerospace,the usage ratio of such alloys is one of the criteria to measure whether the aerospace equipment is advanced or not.Because these alloys show low hardness and wear resistance,fretting wear becomes an important cause for the failure of titanium alloy parts.To improve the fretting wear resistance,laser cladding was used to produce a coating on the surface of TC4 alloy in this study.The results showed that the hardness and wear resistance of TC4 alloy were improved by laser cladding Ti-Al powder.
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