Fatigue property of W/steel joints is important for predicting the life of First Wall (FW). Few facilities can satisfy the harsh coolant parameters of FW. It is necessary to develop a method to evaluate the fatigue property, using coolant with normal pressure and temperature, for example 0.2 MPa and 25 ℃. Combining numerical calculation and experiment validation. Building the relationship between different heat flux and the maximum temperature and strain, predicting the life of FW according to Manson-Coffin formula (MC). Verifying by the fatigue test in a High Heat Flux test platform equipped with an electron gun, the experimental results have shown the feasibility of this method.

W/钢接头的疲劳特性对于预测第一壁 (FW) 的寿命很重要。很少有设施能够满足 FW 苛刻的冷却剂参数。有必要开发一种评估疲劳性能的方法，使用常压常温的冷却液，例如 0.2 MPa 和 25 ℃。结合数值计算和实验验证。建立不同热通量与最高温度和应变之间的关系，根据曼森-柯芬公式（MC）预测 FW 的寿命。通过在配备电子枪的高热通量试验平台上进行疲劳试验验证，实验结果表明了该方法的可行性。