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GH4169合金的研究新進(jìn)展
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中國(guó)華能集團(tuán)公司科學(xué)技術(shù)課題；西北工業(yè)大學(xué)凝固技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室開(kāi)放課題（SKLSP201411）


New Research Development of Superalloy GH4169
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    摘要:

    GH4169合金是沉淀強(qiáng)化型鎳鐵基高溫合金，在航空發(fā)動(dòng)機(jī)、石油、核工業(yè)等領(lǐng)域已得到廣泛應(yīng)用。以往研究表明，當(dāng)使用溫度超過(guò)650 ℃時(shí)，其主要強(qiáng)化相γ"會(huì)發(fā)生相轉(zhuǎn)變，使強(qiáng)化相的體積分?jǐn)?shù)和強(qiáng)化效應(yīng)下降，限制了合金在更高溫度領(lǐng)域的應(yīng)用。本研究在總結(jié)GH4169合金組織、析出相特征和相關(guān)性能的基礎(chǔ)上，介紹δ相的析出和分布與合金性能的關(guān)系，總結(jié)了該合金的成分改性特點(diǎn)，對(duì)該合金在700 ℃甚至更高溫度/低應(yīng)力下長(zhǎng)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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趙新寶,谷月峰,魯金濤,嚴(yán)靖博,尹宏飛. GH4169合金的研究新進(jìn)展[J].稀有金屬材料與工程,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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  • 在線發(fā)布日期: 2015-05-29
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