C和B的含量对K417G镍基高温合金的凝固行为和高温持久性能的影响

舒德龙, 严志, 王道红, 谢君, 侯桂臣, 盛乃成, 李金国, 于金江, 孙晓峰, 周亦胄

Influence of C- and B-content on Solidification and High Temperature Stress Rupture Behavior of Nickel-based Superalloy K417G

SHU Delong, YAN Zhi, WANG Daohong, XIE Jun, HOU Guichen, Naicheng SHENG, LI Jinguo, YU Jinjiang, SUN Xiaofeng, ZHOU Yizhou

图10 No.2合金持久断裂后远离断口区域的晶界、近断口区域的晶粒内部和近断口区域的晶界的形貌

Fig.10 Microstructures on the longitudinal section in No.2 alloy after stress rupture to fracture (a) morphology of the grain boundary far from the fracture; (b) morphology of the grain near the fracture; (c) morphology of the grain boundary near the fracture