长期时效对低膨胀高温合金GH2909性能的影响

徐雄, 李钊, 万志鹏, 韦康, 王涛, 张新房

Effect of Long-term Aging on Properties of Low Expansion Superalloy GH2909

XU Xiong, LI Zhao, WAN Zhipeng, WEI Kang, WANG Tao, ZHANG Xinfang

图4 GH2909合金在不同温度时效2000 h后的微观组织

Fig.4 Microstructure of GH2909 alloy after aging at different temperature for 2000 h (a) standard heat treatment, (b) 550℃, (c) 600℃, (d) 650℃