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对钼合金进行了应力控制高温低周等温疲劳和同相位热机械疲劳试验。对于等温疲劳试验选取的实验温度为３５０℃和５００℃，对于热机械疲劳试验循环温度范围为３５０℃－５００℃。根据采集的材料应力－应变响应和循环破坏周数，可以看出温度的变化对材料疲劳寿命产生很大影响，当温度循环和应力循环叠加时，会加重损伤的程度。对循环回线的分析表明，在每一种疲劳试验过程中均发生材料循环软化和循环蠕变现象。对破坏试件的微观结构分析表明，在高应力循环条件下，钼合金的破坏基本上是脆断过程。
The molybdenum alloy was stress controlled high temperature and low temperature isothermal fatigue and the same phase thermal mechanical fatigue test. For the isothermal fatigue test selected experimental temperature of 350 ℃ and 500 ℃, for the thermal mechanical fatigue test cycle temperature range of 350 ℃ -500 ℃. According to the collected stress-strain response and the number of cycles of damage, it can be seen that the change of temperature has a great influence on the fatigue life of the material. When the temperature cycle and the stress cycle are superimposed, the degree of damage will be aggravated. Analysis of the loopback shows that material cycling softening and cyclic creep occur during each fatigue test. The microstructure analysis of the damaged specimen shows that the destruction of the molybdenum alloy is basically a brittle fracture under high stress cycling conditions.