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。因此探讨了不同晶体结构FeCrAl合金的热蠕变性能。

As the core structural material of the reactor, the nuclear fuel cladding will undergo high-temperature creep during long-term service, resulting in the reduction of the mechanical properties of the material and seriously affecting the safety of nuclear energy. Therefore, the thermal creep properties of FeCrAl alloys with different crystal structures were discussed.