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从Ｔｉ－５５高温钛合金叶片在振动疲劳试验中榫头裂纹的分析入手，研究该合金徽动疲劳特性、破坏机制和影响微动疲劳的主要因素。
Beginning with the analysis of tenon crack in Ti-55 high temperature titanium alloy blade in vibration fatigue test, the fatigue characteristics, failure mechanism and the main factors affecting the fretting fatigue are studied.