纯钛强度低、耐磨性能差,这使其应用受到很大限制。为此,本文采用锻造对纯钛进行了晶粒细化,通过光学显微镜(OM)观察了各道次微观组织演变,利用维氏硬度计和万能试验机研究了硬度和强度的变化。结果表明,500℃下8个道次多向锻造纯钛的晶粒得到了显著细化,抗拉强度和硬度等力学性能也大幅度提高。 Titanium low strength, poor wear resistance, which makes its application has been greatly limited. Therefore, in this paper, pure titanium was grain-refined by forging. Microstructure evolution of each pass was observed by optical microscope (OM). Vickers hardness tester and universal testing machine were used to study the changes of hardness and strength. The results show that the grains of multipass forged pure titanium in 8 passes at 500 ℃ are obviously refined, and the mechanical properties such as tensile strength and hardness are greatly improved.