Effects of cold deformation on microstructure and mechanical properties of Ti-35Nb-9Zr-6Mo-4Sn alloy for biomedical applications

摘要

The effects of cold deformation on the microstructure, texture evolution and mechanical properties of Ti-35Nb-9Zr-6Mo-4Sn alloy during cold rolling were investigated. The results showed that the grains of Ti-35Nb-9Zr-6Mo-4Sn alloy were refined and no transformation of stress-induced martensite phase occurred after cold rolling. The dominant {lll}<110> and {001}<110> textures formed after cold deformation and the intensities enhanced with the increase in reduction. The strength increased with the increase of cold reduction due to the effects of the increased dislocation density, microstrain and the grain refinement caused by cold deformation. The grain refinement, the increased dislocation density and the formation of <110> orientation textures resulted in the decrease of Young's modulus after cold rolling.