一种低Re二代单晶高温合金长期时效后的性能

付芸迪, 申健, 黄亚奇, 卢玉章, 王栋

Microstructure-property Evolution in a Low-rhenium Second-generation Single Crystal Superalloy Following Long-term Aging

FU Yundi, SHEN Jian, Huang Yaqi, LU Yuzhang, WANG Dong

图15 完全热处理态和长期时效500 h、1000 h的合金持久断裂后的γ/γ′相组织和距离断口0.5 mm、2 mm和6 mm的相结构

Fig.15 SEM micrographs of γ/γ′ phase structures in stress-ruptured specimens: (a-c) fully heat-treated alloy vs. (d-f) 500 h and (g-i) 1000 h long-term aged alloy at distances of 0.5 mm (a, d), 2 mm (b, e), and 6 mm (c, f) from fracture surface