Oxygen is a harmful element in Ni-base superalloy, which is usually the origin also the propagating passageway of fatigue cracks and will cause creep effect and affect the lasting strength.

• 氧在高温合金中是作为有害杂质元素存在的,通常是疲劳裂纹的萌生地及扩展通道,从而影响高温合金的蠕变、持久强度等性能。