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高温蠕变现象，导致材料机械性能降低，严重影响核能安全。因此探讨了合金元素含量变化对FeCrAl合金蠕变应力因子的影响规律。

As the core structural material of the reactor, the nuclear fuel cladding undergoes high-temperature 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 effect of alloy composition on the creep stress exponent of FeCrAl alloy is discussed.