变形对镍基高温合金GH4169长期时效过程的影响
Effect of Deformation on Long-term Aging Process for Ni-based Superalloy GH4169
张凌峰, 熊 毅, 王延枝, 王宇飞
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作者单位：河南科技大学 材料科学与工程学院, 河南 洛阳 471003
中文关键字：镍基高温合金GH4169； 时效； 微观分析； 显微硬度
英文关键字：Ni-based superalloy GH4169; aging; microscopic analysis; microhardness
中文摘要：对镍基高温合金GH4169进行长期时效实验，分析变形、温度和时间等因素对合金性能的影响，同时对不同状态下时效的合金进行微观分析对比。结果表明：适当的变形有利于抑制TCP相的析出，对提高合金性能有利，合金在40%变形后进行750 ℃保温50 h时效，处理效果最佳，此时晶内析出颗粒尺寸适中及细小弥散分布的强化相γ'，强化了材料的力学性能。
英文摘要：Long-term aging experiments of Ni-based superalloy GH4169 were carried out. The effects of deformation, temperature and time on the mechanical properties of the alloy were analyzed, while different microstructure of the aging alloy was compared. The results show that: the appropriate deformation can suppress the precipitation of TCP phase, enabling to improve the properties of the alloy. The best aging process of the alloy is aging at 750 ℃ for 50 h after 40% deformation. The size of precipitated particle phase γ' is moderate, it can strengthen the mechanical properties of materials.