Research on Microstructure and Properties of Titanium Alloy by Hydraulic and Non-hydraulic Forming

Electromagnetic pulse shaping is a new type of method compared with the normal hydraulic forming,which has a good application prospect. TA15 titanium alloy tube samples were respectively formed by hydraulic and electromagnetic pulse methods,and the microstructures,mechanical properties and wear resistances of the formed samples were tested and analyzed. The results show that compared with that of hydraulic forming sample the grain size of titanium alloy formed by electromagnetic pulse shaping is smaller,with better mechanical properties and wear resistance. By comparison with normal hydraulic forming,the tensile strength and elongation after fracture at 400℃ for the alloy by electromagnetic pulse shaping respectively increase by 57.48% and 34.24%,and its impact energy at-20℃ increases by 74.22% with wear volume at 400℃ decreased by 57%.