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FGH96合金中γ′和碳化物相平衡計算
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陜西省省級重點學(xué)科冶金物理化學(xué)建設(shè)項目;國家重點基礎(chǔ)研究發(fā)展計劃(2010CB631204)


Equilibrium Calculations of γ′ and Carbides for P/M Superalloy FGH96
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    摘要:

    利用熱力學(xué)計算軟件Thermo-Calc及相應(yīng)的Ni基數(shù)據(jù)庫對FGH96粉末高溫合金中可能析出的平衡相進(jìn)行計算,并分析元素含量在允許范圍內(nèi)的波動對主要析出相γ′和碳化物析出行為的影響。結(jié)果表明:FGH96合金析出的平衡相有γ′、MC、M23C6、MB2、M3B2和TCP相。Al、Ti和Nb含量的增加會顯著提高γ′相的固溶溫度及析出量;合金中碳化物的析出量及MC的析出溫度主要受到碳含量的影響,Al和Nb含量的變化對碳化物的析出溫度有著顯著影響,其中Al含量的影響尤為明顯。

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    The equilibrium phases in P/M superalloy FGH96 were calculated by Thermo-Calc software and the relevant Ni-base superalloy database. The effects of element content in the allowable variation on the precipitation behavior of γ′ and carbides were analyzed. The calculation results show that the equilibrium precipitation phases are γ′, MC, M23C6, MB2, M3B2 and TCP phases. The solution temperature and precipitation amount of γ′ are significantly increased with more Al, Ti and Nb. The amount of carbides and the precipitation temperature of MC are mainly influenced by the content of carbon. The precipitation temperature of carbides is significantly increased with the Al content increasing and the Nb content decreasing; in particular, Al has a more important effect.

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趙軍普,袁守謙,陶 宇,賈 建,劉 洋. FGH96合金中γ′和碳化物相平衡計算[J].稀有金屬材料與工程,2011,40(6):1019~1024.[Zhao Junpu, Yuan Shouqian, Tao Yu, Jia Jian, Liu Yang. Equilibrium Calculations of γ′ and Carbides for P/M Superalloy FGH96[J]. Rare Metal Materials and Engineering,2011,40(6):1019~1024.]
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  • 收稿日期:2010-06-30
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