以Ti-62222 钛合金为研究对象，对该合金热压缩过程中的变形行为及显微组织演变规律进行了研究。结果 表明，Ti-62222 钛合金的真应力-真应变曲线总体呈应变软化型，曲线在应变较小时出现峰值。 流动应力随着应变值的 升高而下降，随应变速率的增大及变形温度的减小而增大。 而对其热变形组织的研究发现，随着温度的升高，合金中α 相含量减小，β相含量增加，同时α相球化率升高。在大变形量的情况下，α相含量与变形量呈负相关，即变形量越大，α 相含量越少；α相球化率随着变形量增大而显著提高。 当应变速率处于较高水平时，α相含量随应变速率升高而降低； 应变速率对片层α相球化有抑制作用，球化率随应变速率增大而减小。

Focusing on a Ti-62222 titanium alloy, the deformation behavior and evolution of the microstructure during hot compression were investigated. The results indicate that the true stress-true strain curve of the Ti-62222 titanium alloy generally exhibits strain softening, with a peak appearing at a low strain, followed by a decrease in the flow stress as the strain increases. The flow stress increases with increasing strain rate and decreasing deformation temperature. Research on the hot deformation microstructure reveals that as the temperature rises, the content of the α phase in the alloy decreases, whereas the content of the β phase increases, and the globularization rate of the α phase increases. Under conditions of large deformation, the content of the α phase is negatively correlated with the deformation amount, meaning that the greater the deformation is, the lower the content of the α phase. The globularization rate of the α phase significantly increases with increasing deformation amount. When the strain rate is high, the content of the α phase decreases with increasing strain rate. The strain rate has an inhibitory effect on the globularization of the lamellar α phase, and the globularization rate decreases as the strain rate increases.