Multi-step aging treatments were applied to the Ti-15V-3Al-3Sn-3Cr metastable β alloy, with and without cryogenic treatment, and a single-step aged sample was used as a control sample. Microstructural observations and wear tests were applied to heat-treated samples. Compared to the single-step aged sample, the average length and width of the α plates decreased by 76 and 56%, respectively, in the triplex aged sample after cryogenic treatment. The friction coefficient and mass loss decreased with the duplex aged sample’s increase in hardness. Although, the increase in hardness to higher levels in triplex aged samples increased friction coefficient and mass loss by about 33 and 62% due to the ductility loss. However, implementation of the cryogenic treatment decreased the friction coefficient and mass loss due to the cause of ductility increasing even after the triplex aging treatment. The lowest coefficient of friction obtained in the duplex aged sample after cryo-treatment was 0.08 μ, and the highest in the triplex aged sample was 0.16 μ.

对Ti-15V-3Al-3Sn-3Cr亚稳态β合金进行多步时效处理，有和没有深冷处理，单步时效样品作为对照样品。显微组织观察和磨损测试应用于热处理样品。与单步老化样品相比，α的平均长度和宽度在低温处理后的三重老化样品中，板分别减少了 76% 和 56%。摩擦系数和质量损失随着双相时效样品硬度的增加而降低。尽管如此，由于延展性损失，三重时效样品的硬度增加至更高水平会使摩擦系数和质量损失增加约 33% 和 62%。然而，即使在三次时效处理后，由于延展性增加，低温处理的实施降低了摩擦系数和质量损失。冷冻处理后的双重老化样品中获得的最低摩擦系数为0.08μ，而三重老化样品中的最高摩擦系数为0.16μ。