GH907合金机匣锻环的超声衰减性能与其组织的关系

吕涛, 刘芳, 刘畅, 董德秀, 张伟红, 蔡桂喜

Influence of Microstructure on Ultrasonic Attenuation of Forged GH907 Alloy Ring for Aero Engine Turbine Casing

LV Tao, LIU Fang, LIU Chang, DONG Dexiu, ZHANG Weihong, CAI Guixi

图10 GH907合金中非黑晶区和黑晶区显微组织的SEM照片

Fig.10 SEM images of microstructures of GH907 alloy (a) non-black grain area; (b) black grain area