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采用慢应变速率试验（ＳＳＲＴ）法并结合断口分析，研究了ＴＣ１１、Ｔｉ－８１１和ＴＣ４三种钛合金的固体银致脆（ＳＳＩＥ）行为，同时对ＳＳＩＥ机制进行了分析。结果表明，在２．４×１０－６ｓ－１慢速率拉伸条件下，磁控溅射Ａｇ膜使ＴＣ１１在４５０℃以上呈现出较显著的ＳＳＩＥ敏感行为，其ＳＳＩＥ下限温度约为４００℃。三种钛合金与Ａｇ箔紧密机械接触，在５００℃时均显示很高的ＳＳＩＥ敏感性，敏感程度依ＴＣ１１、ＴＣ４、Ｔｉ－８１１顺序增大。钛合金ＳＳＩＥ敏感性取决于Ａｇ与钛合金表面结合紧密程度及Ａｇ沿钛合金晶界扩散速率、Ａｇ表面自扩散速率和钛合金表面氧化膜破裂速率的相对大小
The slow strain rate (SSRT) method and fracture analysis were used to study the solid silver induced brittleness (SSIE) behavior of the three titanium alloys TC11, Ti-811 and TC4, and the SSIE mechanism was also analyzed. The results show that under the condition of 2.4 × 10-6s-1 slow-rate stretching, the magnetron sputtering Ag film makes the TC11 exhibit more remarkable SSIE sensitivity behavior at 450 ℃, the SSIE lower limit temperature is about 400 ℃ . Three kinds of titanium alloy and Ag foil are in close mechanical contact, showing high SSIE sensitivity at 500 ℃. The sensitivity increases according to the order of TC11, TC4 and Ti-811. The SSIE sensitivity of titanium alloy depends on the close bond between Ag and titanium alloy surface and the diffusion rate of Ag along the grain boundary of titanium alloy, the self-diffusion rate of Ag surface and the relative size of oxide film rupture rate on the surface of titanium alloy