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鎳基高溫合金GH141平衡析出相的熱力學(xué)計(jì)算分析
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北京科技大學(xué) 材料科學(xué)與工程學(xué)院,北京科技大學(xué) 材料科學(xué)與工程學(xué)院,國(guó)家國(guó)防科技工業(yè)局 協(xié)作配套中心,北京科技大學(xué) 材料科學(xué)與工程學(xué)院,北京科技大學(xué) 材料科學(xué)與工程學(xué)院,鋼鐵研究總院 高溫材料研究所,北京科技大學(xué)

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國(guó)家自然科學(xué)基金項(xiàng)目（面上項(xiàng)目，重點(diǎn)項(xiàng)目，重大項(xiàng)目）


Thermodynamic Calculation of Equilibrium Precipitation Phases in GH141 Ni-based Superalloy
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University of Science and technology Beijing, School of Material Science and Engineering,University of Science and technology Beijing, School of Material Science and Engineering,State Administration of Science, Technology and Industry for National Defence, Coordination Center,University of Science and technology Beijing, School of Material Science and Engineering,University of Science and technology Beijing, School of Material Science and Engineering,Central Iron and Steel Research Institute, High Temperature Materials Institute,University of Science and Technology Beijing

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    摘要:

    應(yīng)用Thermo-Calc熱力學(xué)計(jì)算軟件，對(duì)GH141合金的平衡析出相和非平衡凝固過(guò)程進(jìn)行了模擬計(jì)算。結(jié)果表明：GH141合金的平衡析出相有γ、γ''、σ、μ和碳化物（MC、M6C、M23C6）；合金凝固過(guò)程中Mo、Ti元素正偏析比較嚴(yán)重，這會(huì)降低合金的初熔點(diǎn)；Al、Ti含量對(duì)γ''相的開(kāi)始析出溫度和最大析出量有很大影響；C是碳化物最大析出量的控制元素，且MC、M6C、M23C6碳化物的主要富集元素分別是Ti、Mo、Cr。研究結(jié)果為合金的成分設(shè)計(jì)和熱處理提供一定的理論依據(jù)。

    Abstract:

    The equilibrium precipitation phases and the process of non-equilibrium solidification for GH141 Ni-based superalloy were studied by Thermo-Calc software. The main precipitation phases include γ、γ''、σ、μ and carbides (MC,M6C and M23C6). Significant positive segregation of Mo and Ti may occur during solidification based on the calculation, which would decrease the initial melting points of GH141 Ni-based superalloy. The contents of Al and Ti can strongly influence the solvus temperature and the maximum mass fraction of γ'' phase. C is the main control element about the maximum mass fraction of carbides (MC, M6C and M23C6) and the enriched elements of MC, M6C and M23C6 are Ti, Mo and Cr respectively. Research results can provide theoretical basis for composition design and heat treatment.

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徐敏,楊武強(qiáng),張斌,張麥倉(cāng),孟曄,胥國(guó)華,鄭磊.鎳基高溫合金GH141平衡析出相的熱力學(xué)計(jì)算分析[J].稀有金屬材料與工程,2016,45(11):2925~2931.[Xu Min, Yang Wuqiang, Zhang Bin, Zhang Maicang, Meng Ye, Xu Guohua, Zheng Lei. Thermodynamic Calculation of Equilibrium Precipitation Phases in GH141 Ni-based Superalloy[J]. Rare Metal Materials and Engineering,2016,45(11):2925~2931.]
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  • 收稿日期:2014-08-26
  • 最后修改日期:2014-10-09
  • 錄用日期:2015-08-11
  • 在線發(fā)布日期: 2016-12-08
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