两种高代次镍基单晶高温合金热机械疲劳中的再结晶行为

赵鹏, 谢光, 段慧超, 张健, 杜奎

Recrystallization During Thermo-Mechanical Fatigue of Two High-Generation Ni-Based Single Crystal Superalloys

ZHAO Peng, XIE Guang, DUAN Huichao, ZHANG Jian, DU Kui

图4 孪晶片层间以及孪晶交截发生再结晶沿[1 $\bar{1}$ 0]轴的显微组织

Fig.4 Microstructures of ‘subgrain-lite’ and recrystallization grains, and orientation map of ‘subgrain-lite’
(a) BF-STEM image of ‘subgrain-lite’ from the [1

\bar{1}

0] zone axis of paralleled twin lamellae (The third-generation single crystal superalloy)
(b, c) BF-TEM images of ‘subgrain-lite’ from the [1

\bar{1}

0] zone axis of twin intersection in different locations (The fourth-generation single crystal superalloy)
(d) orientation map of the area in Fig.4c obtained by procession electron diffraction (PED)
(e, f) BF-STEM images of recrystallization (RX) grains from the [1

\bar{1}

0] zone axis of paralleled twin lamellae in different locations (The third-generation single crystal superalloy)