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GH4169合金的研究新进展
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中国华能集团公司科学技术课题;西北工业大学凝固技术国家重点实验室开放课题(SKLSP201411)


New Research Development of Superalloy GH4169
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    摘要:

    GH4169合金是沉淀强化型镍铁基高温合金,在航空发动机、石油、核工业等领域已得到广泛应用。以往研究表明,当使用温度超过650 ℃时,其主要强化相γ"会发生相转变,使强化相的体积分数和强化效应下降,限制了合金在更高温度领域的应用。本研究在总结GH4169合金组织、析出相特征和相关性能的基础上,介绍δ相的析出和分布与合金性能的关系,总结了该合金的成分改性特点,对该合金在700 ℃甚至更高温度/低应力下长期使用的可能性做出了展望。

    Abstract:

    Precipitation strengthening Ni-Fe based superalloy GH4169 has been widely used in aircraft engine, petroleum, nuclear industrial etc. Previous papers indicated that the phase transition from γ" to δ was performed when the temperature exceeded 650 oC. The reduction of strengthening phase amount degraded the mechanical properties and the application range. This paper summarized the characteristics of composition, microstructure and precipitated phases of GH4169 alloy. The influences of heat treatment and heat deformation process on the stability of microstructure and mechanical properties were reviewed, and the mechanical properties were affected by the morphologies and distribution of δ phase. The composition features of the modified alloy were concluded. In addition, the future trends and the possibility of GH4169 alloy to satisfy the use requirement for the 700 oC advanced ultra-supercritical power plants were proposed.

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赵新宝,谷月峰,鲁金涛,严靖博,尹宏飞. GH4169合金的研究新进展[J].稀有金属材料与工程,2015,44(3):768~774.[Zhao Xinbao, Gu Yuefeng, Lu Jintao, Yan Jingbo, Yin Hongfei. New Research Development of Superalloy GH4169[J]. Rare Metal Materials and Engineering,2015,44(3):768~774.]
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  • 收稿日期:2014-03-20
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  • 在线发布日期: 2015-05-29
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