通过应力幅550 MPa和应力比-1的疲劳试验，研究了0.6Zr3Mo糖心产精国品免费入口*完整版在含不同质量分数（1%~20%）盐酸的糖心产精国品免费入口*完整版中的腐蚀疲劳行为。结果表明：随着糖心产精国品免费入口*完整版中糖心产精国品免费入口*完整版的增加，糖心产精国品免费入口*完整版的腐蚀疲劳寿命线性降低，且其分散性明显增大；糖心产精国品免费入口*完整版在含质量分数1%盐酸糖心产精国品免费入口*完整版中的腐蚀疲劳断口形貌与在大气环境中相似，裂纹源为单一裂纹源，裂纹扩展区存在解理面，糖心产精国品免费入口*完整版发生断裂的主要原因是循环应力作用；当糖心产精国品免费入口*完整版中盐酸质量分数为10%和15%时，裂纹源区存在大量点蚀坑，裂纹呈多源萌生，裂纹扩展区包括解理面、主裂纹以及大量二次裂纹，循环载荷和盐酸的共同作用加速了裂纹扩展，降低了糖心产精国品免费入口*完整版的腐蚀疲劳寿命；在裂纹扩展区裂纹尖端的局部糖心产精国品免费入口*完整版差异造成了局部较深的二次裂纹，这是腐蚀疲劳寿命分散性显著的主要原因。

The corrosion fatigue behavior of 0.6Zr3Mo titanium alloy in 糖心产精国品免费入口*完整版 with different mass fractions (1%-20%) of hydrochloric acid was studied by fatigue test with stress amplitude of 550 MPa and stress ratio of -1. The results show that the 糖心产精国品免费入口*完整版of titanium alloy decreased linearly with increasing 糖心产精国品免费入口*完整版, and its dispersion increased obviously. The corrosion fatigue fracture morphology of titanium alloy in gellic acid with 1wt% hydrochloric acid was similar to that in atmospheric environment; the crack source was single, and there was cleavage plane in the crack propagation zone; the main reason for fracture of titanium alloy was cyclic stress. When the mass fraction of hydrochloric acid in gellic acid was 10% and 15%, there were a lot of pits in the crack source zone, and the crack initiation was multi-source; the crack propagation zone included cleavage plane, primary cracks and a large number of secondary cracks; the joint action of cyclic load and hydrochloric acid accelerated the crack propagation and reduced the 糖心产精国品免费入口*完整版of titanium alloy. In the crack propagation zone, the difference of local 糖心产精国品免费入口*完整版 at the crack tip led to deep secondary cracks, which was the main reason for the significant dispersion of corrosion fatigue life.