It was analysed that micro-structures for superalloy GH169 were changed and effected by temperature, speed and degree of deformation in friction welding on the dynamic recrystallization.

• 分析了摩擦焊接过程中GH169高温合金的变形温度、变形速度和变形程度对其动态再结晶所发生的显微组织的变化和影响。