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第一原理研究Ti合金中3d合金元素的beta穩(wěn)定效應(yīng)
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河北大學(xué)

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TB31

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國家自然科學(xué)基金(項(xiàng)目號51061130558;51371094);科技部ITER專項(xiàng)課題(項(xiàng)目號:2011GB108002)


The beta-stabilizing effects of 3d metals in Ti: first principles investigation
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HeBei university

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    摘要:

    本文使用了第一原理計(jì)算方法研究了Ti合金中3d合金元素的beta穩(wěn)定效應(yīng)。其中,我們特別關(guān)注了VIIA族和VIII族金屬M(fèi)n, Fe, Co和Ni。計(jì)算結(jié)果表明,雖然Cr,Mn, Fe,Co和Ni的Pauling價電子相同,但是Mn, Fe和Co的beta穩(wěn)定效應(yīng)強(qiáng)于Cr和Ni。我們發(fā)現(xiàn)電子因素是這些金屬元素產(chǎn)生不同強(qiáng)度的beta穩(wěn)定效應(yīng)的主要原因,而原子尺寸因素起的作用很小?;谟?jì)算結(jié)果,我們建議在在設(shè)計(jì)beta-Ti合金的場合,應(yīng)將Mn, Fe和 Co的價電子取為6.5, 6.6 和6.4,以取代常用的Pauling價電子。

    Abstract:

    The beta-stabilizing effects of the 3d transition metals in Ti were investigated by the first principles method. Especially, the beta-stabilizing effects of the group VIIB and group VIII metals Mn, Fe, Co and Ni in Ti were explored. The calculated results showed that Mn, Fe and Co have stronger beta-stabilizing effects than Cr and Ni in Ti, though all have the same Pauling valences. This result can be understood by the chemical bonding analysis, when the atom-size factor is proven to account little. Based on the calculated results, the valences of Mn, Fe and Co were suggested to be 6.5, 6.6 and 6.4 in the design of beta-type Ti alloy, instead of the frequently-used Pauling valence.

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牛建鋼.第一原理研究Ti合金中3d合金元素的beta穩(wěn)定效應(yīng)[J].稀有金屬材料與工程,2016,45(1):137~140.[niujiangang. The beta-stabilizing effects of 3d metals in Ti: first principles investigation[J]. Rare Metal Materials and Engineering,2016,45(1):137~140.]
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  • 收稿日期:2014-01-22
  • 最后修改日期:2014-05-13
  • 錄用日期:2014-06-04
  • 在線發(fā)布日期: 2019-01-04
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