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7 非黑晶区和黑晶区的金相照片

Fig.7 Microstructures of non-black grain area and black grain area (a) A1; (b) C1; (c) C4; (d) B4； (e) B5； (f) B6