Ti and Ti alloys have lots of excellent properties such as high strength weight ratio and melting point, excellent corrosion resistance and plastic property, high modulus of elasiticity and endurance strength etc. Ti-6A1-4V(TC4)is typical double phase Ti alloy of ledeburite a+P type with perfect combination property. However, some defects including high friction coefficient, easy adhesion and low abrasion resistance are obstruction to expand using of Ti-6A1-4V with increasing demand to material prop...