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3 GH2909合金在不同温度时效2000 h后的高温(540℃)拉伸性能
Fig.3 Tensile properties of GH2909 alloy after aging at thigh temperature (540℃) for 2000 h at different temperature, σb is the tensile strength at 540℃, σ0.2 is the yield strength, δ is the elongation and ψ is the reduction of area