Titanium alloy and structure control method for improving specific dynamic performance of titanium alloy

The invention belongs to the technical field of deformed titanium alloys, relates to a titanium alloy and a structure control method for improving the specific dynamic performance of the titanium alloy, and provides a nominal composition quantitative control method based on molybdenum equivalent, aluminum equivalent and density equivalent. The nominal composition of the titanium alloy is composed of 5-7 alloying elements including Al, Sn, Zr and 2-4 of Mo, Cr, Nb, Fe, Ni, V and Mn. The structure control method based on the titanium alloy comprises the following steps: 1, preparing a cast ingot; 2, high-efficiency cogging of the cast ingot; 3, forging stock double-phase spheroidizing and modified forging; fourthly, the blank is finally formed; and 5, forging heat treatment. The method is simple, convenient, accurate and efficient, exerts the synergistic effect of components and tissues, can give consideration to the low density and high dynamic performance of the alloy, and meets the application requirements o