核燃料包壳作为反应堆的核心结构材料，在长期服役过程中会发生辐照蠕变现象，导致材料机械性能降低，严重影响核能安全。因此探讨了不同温度应力下FeCrAl合金的辐照蠕变应力因子变形特性。

As the core structural material of the reactor, the nuclear fuel cladding undergoes irradiation creep during the long-term service process, resulting in a decrease in the mechanical properties of the material and seriously affecting the safety of nuclear energy. Therefore, the irradiation creep stress exponent of FeCrAl alloy under different temperatures and stresses is discussed.