▎ 摘　　要

NOVELTY - Method for preparing high-strength plasticity titanium-graphene composite material based on hierarchical compounding involves weighing 0.1-5 g graphene powder material and 100-1000 g titanium alloy powder respectively, charging the graphene powder material or titanium alloy powder into a ball milling tank for ball milling in two steps under argon gas for protection and alcohol as process control agent, performing first ball milling by putting 50-80 %mass of titanium alloy powder and all graphene powder material or 10-30 %mass of graphene powder material and all titanium alloy powder into a ball milling tank and ball milling for 60-300 minutes, and performing second ball milling by adding remaining mass of titanium alloy powder or graphene powder material to the mixed powder obtained by ball milling, and continuing ball milling for 60-120 minutes to obtain heterogeneously dispersed titanium-graphene composite powder, and performing densification and sintering to obtain the product. USE - The method for preparing high-strength plasticity titanium-graphene composite material based on hierarchical compounding. ADVANTAGE - The method regulates the inhomogeneity of the reinforced graphene and synthesized titanium carbide in the matrix, adjusts the non-uniformity of the matrix particle size, forms the difference in the scale structure, changes the deformation behavior inside the material, and solves the problems of high-strength and low-plasticity of titanium-based composite materials in the past. DETAILED DESCRIPTION - Method for preparing high-strength plasticity titanium-graphene composite material based on hierarchical compounding involves weighing 0.1-5 g graphene powder material and 100-1000 g titanium alloy powder respectively, charging the graphene powder material or titanium alloy powder into a ball milling tank for ball milling in two steps under argon gas for protection and alcohol as process control agent, performing first ball milling by putting 50-80 %mass of titanium alloy powder and all graphene powder material or 10-30 %mass of graphene powder material and all titanium alloy powder into a ball milling tank and ball milling for 60-300 minutes, and performing second ball milling by adding remaining mass of titanium alloy powder or graphene powder material to the mixed powder obtained by ball milling, and continuing ball milling for 60-120 minutes to obtain heterogeneously dispersed titanium-graphene composite powder, and performing densification and sintering to obtain the product, where the titanium alloy powder comprises alpha titanium alloy powder or low alloyed alpha + beta titanium alloy powder prepared by rotating electrode method.