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首页> 外文期刊>ISIJ international >Evolution of TiN and Oxide Inclusions in Ti-containing Fe-25Ni-15Cr Alloy during Electroslag Remelting
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Evolution of TiN and Oxide Inclusions in Ti-containing Fe-25Ni-15Cr Alloy during Electroslag Remelting

机译：电袋重熔期间含Ti含Fe-25Ni-15Cr合金中含锡和氧化物夹杂物的演变

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摘要

The present study was undertaken to investigate the evolution of inclusions in a Ti-containing Fe-25mass%Ni-15mass%Cr alloy during electroslag remelting (ESR). The effect of slag composition on the inclusions in alloy was studied. The inclusions in both consumable electrode and remelted ingots are mainly 1 to 3 μm in size. The inclusions in consumable electrode are TiN, Al_2O_3-Ti_2O_3, Al_2O_3-Ti_2O_3 with a surrounded TiN layer. The inclusions in liquid metal pool and remelted ingots are TiN, MgO-Al_2O_3-Ti_2O_3 inclusion surrounded by TiN, MgO·Al_2O_3 inclusions, MgO·Al_2O_3 inclusions with an outer Ti_2O_3-rich layer. Increasing TiO_2 content in slag has no influence on the types of inclusions in remelted ingots. The original TiN inclusions in consumable electrode cannot be dissociated at the electrode tip during the ESR process. TiN inclusions in remelted ingots mainly generated in liquid metal pool during ESR, and the TiN inclusions formed during the solidification of liquid alloy takes up a small amount fraction. Part of Al_2O_3-Ti_2O_3 inclusions in consumable electrode were removed through absorbing them into molten slag, and the remaining Al_2O_3-Ti_2O_3 inclusions in the liquid alloy reacted with Mg dissolved from ESR slag to form MgO-Al_2O_3-Ti_2O_3 inclusions which served as the nucleation sites for TiN inclusion formation. MgO·Al_2O_3 inclusions in the remelted ingots precipitated in the liquid metal pool during ESR process. The generation of MgO·Al_2O_3 inclusions with an outer Ti_2O_3-rich layer originated from the reaction between soluble titanium in liquid alloy and MgO·Al_2O_3 inclusion to form an outer Ti_2O_3-rich layer on unreacted MgO·Al_2O_3 inclusion core.
机译：进行了本研究，以研究在电渣重熔期间含Ti含Fe-25mas％Ni-15mass％Cr合金中含有Ti的含Fe-25mas％Ni-15mass％Cr合金的夹杂物的演变。研究了炉渣组合物对合金夹杂物的影响。消耗电极和重熔锭的夹杂物的尺寸主要是1至3μm。消耗电极中的夹杂物是锡，AL_2O_3-TI_2O_3，AL_2O_3-TI_2O_3，具有围绕的锡层。液态金属池和重熔锭的夹杂物是由锡，MgO·Al_2O_3夹杂物包围的MgO-Al_2O_3-Ti_2O_3夹杂物，MgO·Al_2O_3含有外部Ti_2O_3的层。增加渣中的TiO_2内容对重新熔断锭的夹杂物类型没有影响。在ESR过程期间，可消耗电极中的原始锡夹在电极尖端中不能分离。在ESR期间主要在液态金属池中产生的重熔锭的锡夹杂物，并且在液体合金的凝固过程中形成的锡夹杂物占少量馏分。通过将它们吸收到熔渣中除去可消耗电极中的Al_2O_3-Ti_2O_3中的一部分，并且液体合金中的剩余Al_2O_3-Ti_2O_3夹杂物与溶解的Mg与ESR渣溶解以形成MgO-Al_2O_3-Ti_2O_3夹杂物，其用作成核位点用于镀锡的形成。在ESR过程中，MgO·Al_2O_3在液态金属池中沉淀的重熔锭中的夹杂物。 MgO·Al_2O_3夹杂物的含有外部Ti_2O_3的层源于液体合金中可溶性钛和MgO·Al_2O_3的反应，以在未反应的MgO·Al_2O_3夹杂物核上形成外部Ti_2O_3的层。

著录项

  • 来源
    《ISIJ international》 |2020年第8期|1577-1585|共9页
  • 作者

    Dingli ZHENG; Jing LI; Chengbin SHI; Jie ZHANG; Ruming GENG;

  • 作者单位

    State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing (USTB) 30 Xueyuan Road Haidian District Beijing 100083 P.R. China;

    State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing (USTB) 30 Xueyuan Road Haidian District Beijing 100083 P.R. China;

    State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing (USTB) 30 Xueyuan Road Haidian District Beijing 100083 P.R. China;

    State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing (USTB) 30 Xueyuan Road Haidian District Beijing 100083 P.R. China;

    State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing (USTB) 30 Xueyuan Road Haidian District Beijing 100083 P.R. China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    electroslag remelting; titanium; Fe-Ni-Cr alloy; inclusion;

    机译：电渣重熔;钛;Fe-Ni-Cr合金;包容;

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