bcc Fe-Si-V 系におげる規則化と相分離のBragg-Williams-Gorsky法による解析

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  • Analysis of Ordering and Phase Separation in a bcc Fe-Si-V Ternary System Based on the Bragg-Williams-Gorsky Model
  • bccFe-Si-V系における規則化と相分離のBragg-Williams-Gorsky法による解析
  • bcc Fe Si Vケイ ニ オケル キソクカ ト ソウ ブンリ ノ Bra

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Free energy of the Fe-base ternary ordering alloys where B2 and DO3 ordered structures are formed is evaluated by a statistical approach employing the Bragg-Williams-Gorsky approximation: the magnetic interactions are taken into account between the first and the second nearest neighbour spins of atoms as well as the usual atomic interactions up to the second nearest neighbours. An application of this model was performed on the Fe-Si-V ternary ordering system. The equilibrium phase diagrams of the Fe-Si-V systems given by the present calculation are consistent with the previously obtained experimental results. It becomes also clear in the calculation that not only the two-phase field becomes much wider but also the driving force for the phase separation increases by considering the ferromagnetic interaction.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 54 (2), 139-145, 1990

    公益社団法人 日本金属学会

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