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Thermodynamic Analysis for Microstructure of High-Entropy Alloys
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Thermodynamic Analysis for Microstructure of High-Entropy Alloys
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Research Program from Nanjing Institute of Technology (QKJB2010005); National Natural Science Foundations of China (50971041)

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    摘要:

    對高熵合金系的液相與晶態(tài)相、金屬間化合物相及非晶相之間的吉布斯自由能之差這幾個熱力學(xué)參數(shù)進(jìn)行了分析，發(fā)現(xiàn)ΔSrΔHh(sol.)值的大小對高熵合金的顯微結(jié)構(gòu)有重要影響。結(jié)果表明：ΔSrΔHh(sol.)值較低的高熵合金傾向于形成單相fcc或bcc固溶體，而ΔSrΔHh(sol.)值較大的高熵合金通常形成相對復(fù)雜的結(jié)構(gòu)。

    Abstract:

    The Gibbs free energy of liquid and crystal, intermetallic compounds, and amorphous phases were investigated by thermodynamic analysis for microstructure of high-entropy alloy (HEA). Results show that the value of ΔSrΔHh(sol.) plays an important role in estimating the microstructure of HEAs. The alloys with lower value of ΔSrΔHh(sol.) have stronger tendency of forming single fcc or bcc solid solution, and the alloy with complicated microstructure always has larger value of ΔSrΔHh(sol.).

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皮錦紅,潘 冶. Thermodynamic Analysis for Microstructure of High-Entropy Alloys[J].稀有金屬材料與工程,2013,42(2):232~237.[Pi Jinhong, Pan Ye. Thermodynamic Analysis for Microstructure of High-Entropy Alloys[J]. Rare Metal Materials and Engineering,2013,42(2):232~237.]
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  • 收稿日期:2012-02-10
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