Effect of Microstructure on Static Mechanical Properties of Ti-6Al-4V-4Zr-1.5Mo Alloy

Ti-6Al-4V-4Zr-1.5Mo alloy was processed with three different heat treatment processes,and equiaxed,lamellar and bimodal microstructure separately can be obtained.The test of static tension and static compression experiments carried out on the alloy with different microstructure.The fracture morphology of tension and compression samples were observed by SEM.According to the results,the effect of microstructure of the alloy on the static mechanical properties is obvious.The alloy with equiaxed microstructure owns the best ductility,but the lowest strength.The alloy with lamellar microstructure show the highest strength,but the worst ductility.The alloy with bimodal microstructure exhibits good strength and ductility.