溶融Fe–18mass%Cr合金中Mo, B, Ni, Ti, NbとSn間の相互作用係数

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  • 堀 功雅
    富山大学大学院理工学教育部 （現：（株）ディスコ）
  • 加藤 謙吾
    大阪大学大学院工学研究科（現：富山大学）
  • 小野 英樹
    富山大学学術研究部都市デザイン学系

書誌事項

タイトル別名
  • Interaction Coefficients of Mo, B, Ni, Ti and Nb with Sn in Molten Fe–18mass%Cr Alloy

抄録

<p>Increasing the utilization of steel scrap is strongly required for reducing CO2 emission in iron- and steel-making processes. In steel scrap recycling, the content of tramp elements in steel (such as copper and tin) inevitably increases. Accordingly, it is important to understand the thermodynamic characteristics of relevance to the accumulation of tramp elements in molten steel. The values of the interaction coefficients of Mo, B, Ni, Ti, and Nb with Sn in molten iron were reported previously. However, little is known about the interaction coefficients of alloying elements with tramp elements in molten high-chromium steel. In this work, the interaction coefficients of Mo, B, Ni, Ti, and Nb with Sn in the molten Fe–18mass%Cr alloy were measured at 1873 K by a chemical equilibration technique that uses the liquid immiscibility of the Fe–18mass%Cr alloy and Ag, yielding the following results:</p><p><img align="middle" src="./Graphics/abst-110_TETSU-2024-003_eq_a.jpg"/></p><p>The results show that the values of the interaction coefficients of M with Sn in the Fe–18mass%Cr alloy are smaller than those for molten iron, which were measured in the previous work, except for titanium. The interaction coefficients of M with Sn in Fe and Fe–18mass%Cr alloy were estimated based on a regular solution model. The estimated interaction coefficients of B, Ni, and Ti with Sn in molten iron and Ni and Ti with Sn in the molten Fe–18mass%Cr alloy reasonably agree with the measured values.</p>

収録刊行物

  • 鉄と鋼

    鉄と鋼 110 (7), 513-521, 2024-05-01

    一般社団法人 日本鉄鋼協会

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