【摘要】 随着氢浓度增加,Ti-60合金中的初生α相的体积分数、(α+β)→β相变点及高温屈服强度均连续降低,高温拉伸时合金的最低屈服点出现在相应氢浓度下的(α+β)→β相变点处,进一步增加氢含量反而使合金的屈服强度升高,其原因是氢强化了β相。Ti-60合金中氢浓度ω(H)与(α+β)→β相变点满足方程：t(α+β)→β(℃)=815+210exp(-3ω(H)),900℃拉伸时,0．3％的氢使合金的屈服强度降幅达70％。更多还原

【Abstract】 The volume fraction of primary α-phase, the (α+β)→β transformation temperature and high temperature yield strength of Ti-60 alloy are continuously decreased with increasing hydrogen content in the alloy.The minimum yield strength of the alloy at high temperature occurs at the hydrogen concentration corresponding to the (α+β) →β transition and then increases due to the hardening effect of hydrogen addition on the β-phase.The relationship between hydrogen concentration and (α+β) →β transformation temperature can be expressed as: t (α+β) →β(℃)=815+210exp (-3ω (H) ).Tensile at 900 ℃ will make the yield strength reduce about 70% for the alloy containing 0.3% hydrogen.更多还原