轧制变形TC1和TC2钛合金的高周疲劳性能
High Cycle Fatigue Properties of Hot-rolled TC1 and TC2 Titanium Alloys
吕 伟1,2, 陈立佳1, 车 欣1, 刘 正1
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作者单位：1. 沈阳工业大学 材料科学与工程学院, 辽宁 沈阳 110870; 2. 沈阳航空航天大学 材料科学与工程学院, 辽宁 沈阳110136
中文关键字：钛合金； 轧制变形； 高周疲劳； 疲劳极限； 疲劳寿命
英文关键字：titanium alloy; hot-rolling deformation; high-cycle fatigue; fatigue limit; fatigue life
中文摘要：通过进行应力控制的疲劳试验，研究了TC1和TC2钛合金热轧板材在不同试验温度下的高周疲劳性能，并对两类钛合金板材的疲劳性能进行了比较。结果表明，在相同的最大循环应力下，TC1和TC2钛合金板材的高周疲劳寿命均随着温度的升高而降低，且当温度相同时，TC2钛合金板材的疲劳寿命均高于相同轧制方向的TC1钛合金板材。此外，实验温度越高，TC1和TC2钛合金板材的疲劳极限越低，且在不同温度下，TC2钛合金板材的疲劳极限均明显高于相同轧制方向的TC1钛合金板材。
英文摘要：Through performing the stress-controlled fatigue tests, the high-cycle fatigue properties of hot-rolled TC1 and TC2 titanium alloy plates at different testing temperature were investigated, and the fatigue properties of two alloy plates were compared. The results show that, at the same maximum cyclic stress, the fatigue lives of both TC1 and TC2 alloy plates decrease with the increase of temperature. At the same testing temperature, the fatigue life of TC2 alloy plate is longer than that of TC1 alloy plate. In addition, both TC1 and TC2 alloy plates show lower fatigue limit at higher testing temperature. At different temperature, the fatigue limit of TC2 alloy plate is higher than that of TC1 alloy plate.