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5 GH2909合金在不同温度长期时效后的“黑晶”组织形貌

Fig.5 Morphology of“black crystal”after aging of GH2909 alloy at different temperature (a) standard heat treatment；(b) 550℃；(c) 600℃；(d) 650℃