FGH4720Li粉末高温合金在近服役条件下的组织与力学性能演变规律
李大禹, 姚志浩, 赵杰, 董建新, 郭婧, 赵宇

Evolution of Microstructure and Mechanical Properties of FGH4720Li P/M Superalloy Under Near-Service Conditions
LI Dayu, YAO Zhihao, ZHAO Jie, DONG Jianxin, GUO Jing, ZHAO Yu
表1 FGH4720Li合金持久实验过程中二次γ'相和三次γ'相的平均体积分数及尺寸
Table 1 Average volume fractions and sizes of the secondary and tertiary γ' phases under different stress rupture conditions
Experimental condition

fs

%

rs

nm

ft

%

rt

nm

650 oC, 500 h33.2104.93.1212.4
650 oC, 1000 h34.3108.02.8312.6
650 oC, 2000 h35.9114.92.2712.9