γ' 相强化钴基高温合金成分设计与蠕变机理研究进展

冯强, 路松, 李文道, 张晓瑞, 李龙飞, 邹敏, 庄晓黎

Recent Progress in Alloy Design and Creep Mechanism of γ'-Strengthened Co-Based Superalloys

FENG Qiang, LU Song, LI Wendao, ZHANG Xiaorui, LI Longfei, ZOU Min, ZHUANG Xiaoli

图8 钴基单晶高温合金γ'相中超点阵内禀层错(SISF)[102]和超点阵外禀层错(SESF)[91]的原子结构及其形成机制模型图

Fig.8 Atomic structures of superlattice intrinsic stacking fault (SISF) (a)[102] and superlattice extrinsic stacking fault (SESF) (b)[91] in the γ' phase as well as their schematic formation mechanisms (c) in γ'-strengthened Co-based single crystal superalloys (Inset in Fig.8a shows a center-of-symmetry map of the structure. LPD—leading partial dislocation, ISF—intrinsic stacking fault, APB—antiphase boundary, CISF—complex intrinsic stacking fault)