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5 DD26G合金一次时效和一次时效+二次时效后的γ/γ′相形貌以及1120 ℃/4 h, AC + 870 ℃/24 h, AC时效后γ′析出相的统计结果

Fig.5 Microstructural morphology of γ/γ′ phases after aging 1120 oC/2 h (a), 1120 oC/4 h (b), 1150 oC/4 h (c), 1120 oC/2 h, AC + 870 oC/24 h, AC (d), 1120 oC/4 h, AC + 870 oC/24 h, AC (e), 1150 oC/4 h, AC + 870 oC/24 h, AC (f), statistical results of γ′ precipitates under the aging regime of 1120 oC/4 h, AC+ 870 oC/24 h, AC (g)