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鎳基耐蝕Hastelloy G3合金的組織特征及熱力學計算
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太原鋼鐵(集團)有限公司先進不銹鋼材料國家重點實驗室

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Microstructure Characteristics and Thermodynamic Calculation of Nickel-based Corrosion Resistant Hastelloy G3 Alloy
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1.State Key Laboratory of Advanced Stainless Steel Materials, Taiyuan Iron and Steel(Group)Co., LTD. Taiyuan 030003, China;2.b. Technology Center，Shanxi Taigang Stainless Steel Co., LTD. Taiyuan 030003, China

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    摘要:

    利用Thermo-Calc軟件對鎳基耐蝕Hastelloy G3合金進行了熱力學計算，系統(tǒng)研究了成分對平衡相析出的影響規(guī)律，并通過SEM和TEM對合金時效處理后的析出相進行了觀察。結果表明，合金析出的平衡相主要為σ相、μ相、M6C和M23C6；Cr、Mo含量主要影響σ相和μ相析出量及開始析出溫度；而C元素顯著影響碳化物M6C和M23C6的析出行為；進一步通過試驗研究了時效過程中析出相的析出規(guī)律。

    Abstract:

    Thermo-Calc software was used to calculate the thermodynamics of nickel-based corrosion resistant Hastelloy G3 alloy, and the influence of composition on the precipitation of equilibrium phase was systematically studied. The precipitated phase of alloy after aging treatment was observed by the SEM and TEM. The results show that the equilibrium phases of alloy precipitation are mainly σ phase, μ phase, M6C and M23C6; the content of Cr and Mo mainly affect the precipitation of σ phase and μ phase and the initial precipitation temperature; while the content of C significantly affects the precipitation behavior of carbides M6C and M23C6; The precipitation rule of precipitates during the aging process is further studied through experiments.

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趙振鐸,李莎,范光偉,李建春.鎳基耐蝕Hastelloy G3合金的組織特征及熱力學計算[J].稀有金屬材料與工程,2020,49(9):2983~2990.[Zhenduo Zhao, Sha Li, Guangwei Fan, Jianchun Li. Microstructure Characteristics and Thermodynamic Calculation of Nickel-based Corrosion Resistant Hastelloy G3 Alloy[J]. Rare Metal Materials and Engineering,2020,49(9):2983~2990.]
DOI：10.12442/j. issn.1002-185X. E20190093

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  • 收稿日期:2019-07-15
  • 最后修改日期:2019-11-17
  • 錄用日期:2019-11-19
  • 在線發(fā)布日期: 2020-10-15
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