鉄合金のα-γ変態の熱力学的考察

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  • Thermodynamic Consideration on the α-γ Transformation of Iron Alloys
  • テツ ゴウキン ノ アルファ-ガンマ ヘンタイ ノ ネツリキガクテキ コウサツ
  • Thermodynamic Consideration on the α-γ Transformation of Iron Alloys

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A thermodynamic study was made on the shape of the γ-field in the phase diagram of iron alloys. The atomic fraction of the solute xB of the so-called allotropic phase boundary was given by<BR>(This article is not displayable. Please see full text pdf.) <BR>where ΔFA, ΔFB are the energy differences between γ- and α-phase for pure Fe and pure solute, respectively, and Δw is the difference of interchange energies between γ- and α-alloys. The shape of the allotropic phase boundary was determined by the two parameters, ΔFB and Δw. The theory was applied to Fe-Cr, Fe-Ti and Fe-Co systems, and consistencies with experimental diagrams were obtained for Fe-Cr and Fe-Co. For Fe-Ti system, extremely high values of ΔFB and Δw were required to interprete the experimental γ-loop.

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  • 日本金属学会誌

    日本金属学会誌 25 (11), 707-711, 1961

    公益社団法人 日本金属学会

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