850 ℃涡轮盘用新型变形高温合金GH4975挤压棒材热变形规律研究
张勇1(), 李鑫旭1, 韦康1, 万志鹏1, 贾崇林1, 王涛1, 李钊1, 孙宇2, 梁红艳3
Hot Deformation Characteristics of Novel Wrought Superalloy GH4975 Extruded Rod Used for 850 ℃ Turbine Disc
ZHANG Yong1(), LI Xinxu1, WEI Kang1, WAN Zhipeng1, JIA Chonglin1, WANG Tao1, LI Zhao1, SUN Yu2, LIANG Hongyan3

图8. GH4975合金在不同变形条件下微观组织的TEM像

Fig.8. TEM images of microstructures of GH4975 superalloy deformed at 1150 ℃, 0.001 s-1 (a), 1180 ℃, 0.1 s-1 (c) and 1180 ℃, 1 s-1 (d); Hereinto, Fig.8b is the selected area electron diffraction pattern (SAEDP) of Fig.8a, which is to identify the γ′ precipitates