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釩濃度與Ni75Al25-xVx合金形核孕育期的相關(guān)性研究
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國(guó)家自然科學(xué)基金（51075335，10902086，50875217）；西北工業(yè)大學(xué)基礎(chǔ)研究基金


Study on the Correlation between Vanadium Concentration and Nucleation Incubation Period of Ni75Al25-xVx Alloy
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    摘要:

    基于微觀相場(chǎng)動(dòng)力學(xué)模型，用原子形貌演化圖、平均序參數(shù)等研究釩（V）原子濃度與Ni75Al25-xVx合金沉淀析出L12相和D022相的形核孕育期的相關(guān)性。結(jié)果表明，若V元素的濃度在不同區(qū)間變化，則Ni75Al25-xVx合金沉淀析出L12和D022兩相的孕育期也發(fā)生變化，兩者呈現(xiàn)完全不同的相關(guān)性：當(dāng)9.0≤x<19.7時(shí)，兩相的孕育期與V濃度呈正相關(guān)性，且D022相的孕育期長(zhǎng)于L12相的孕育期；當(dāng)19.7

    Abstract:

    The correlation between the concentration of vanadium (V) and the nucleation incubation period of L12 order phase and D022 order phase precipitated from Ni75Al25-xVx alloy was investigated by atom morphology evolution and average order parameters based on the microscopic phase dynamic model. The computer simulations demonstrate that with the variation of vanadium concentration in different ranges, the nucleation incubation periods change for L12 order phase and D022 order phase precipitated from Ni75Al25-xVx, and they present totally diverse correlation. When x is between 9.0 and 19.7, the incubation periods of two phases and V content show positive correlation, and the incubation period of D022 is longer than that of L12. When x is between 19.7 and 23.0, the incubation periods of two phases and V content show negative correlation, and the incubation period of L12 is longer than that of D022. When x is equal to 19.7, the difference between their nucleation incubation periods is not obvious.

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伍 林,陳 錚,王永欣,莊厚川,黃勇兵,楊 濤.釩濃度與Ni75Al25-xVx合金形核孕育期的相關(guān)性研究[J].稀有金屬材料與工程,2012,41(9):1568~1573.[Wu Lin, Chen Zheng, Wang Yongxin, Zhuang Houchuan, Huang Yongbing, Yang Tao. Study on the Correlation between Vanadium Concentration and Nucleation Incubation Period of Ni75Al25-xVx Alloy[J]. Rare Metal Materials and Engineering,2012,41(9):1568~1573.]
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  • 收稿日期:2011-09-11
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