一种低成本第三代单晶高温合金的高温氧化行为

李永梅, 谭子昊, 王新广, 陶稀鹏, 杨彦红, 刘纪德, 刘金来, 李金国, 周亦胄, 孙晓峰

Oxidation Behavior of a Low-Cost Third-Generation Ni-Based Single-Crystal Superalloy

LI Yongmei, TAN Zihao, WANG Xinguang, TAO Xipeng, YANG Yanhong, LIU Jide, LIU Jinlai, LI Jinguo, ZHOU Yizhou, SUN Xiaofeng

图6 合金经1120 ℃氧化不同时间后近贫Al层20~40 µm区域与样品表面2 mm区域(样品内部)的组织演变

Fig.6 SEM images of microstructure evolution 20-40 µm near the Al-depletion region (a1-e1) and 2 mm away from the surface (a2-e2) of samples after oxidizing at 1120 oC for 1 h (a1, a2), 5 h (b1, b2), 40 h (c1, c2), 100 h (d1, d2), and 200 h (e1, e2)