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7 GH2909合金在不同温度时效2000 h后γ′相的变化

Fig.7 Change of γ′ phase of GH2909 alloy after aging for 2000 h at different temperature (a) standard heat treatment; (b) 550℃; (c) 600℃; (d) 650℃