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<p>The fcc-based (Zr, Nb)<sub>2</sub>Fe phase was previously recognized as a stable compound in the Zr–Nb–Fe system. Our study shows that (Zr, Nb)<sub>2</sub>Fe is an O-stabilized phase (Zr, Nb)<sub>4</sub>Fe<sub>2</sub>O. The results indicate that the (Zr, Nb)<sub>4</sub>Fe<sub>2</sub>O is based on the ternary Zr<sub>4</sub>Fe<sub>2</sub>O<sub><i>x</i></sub> phase in the Zr–Fe–O system.This study has identified four four-phase equilibria consisting of [βZr + Zr(Nb, Fe)<sub>2</sub> + (Zr, Nb)<sub>4</sub>Fe<sub>2</sub>O + liquid], [βZr + Zr(Nb, Fe)<sub>2</sub> + αZr + (Zr, Nb)<sub>4</sub>Fe<sub>2</sub>O], [ZrFe<sub>2</sub> + Zr(Nb, Fe)<sub>2</sub> + (Zr, Nb)<sub>4</sub>Fe<sub>2</sub>O + liquid] and [αZr + Zr(Nb, Fe)<sub>2</sub> + (Zr, Nb)<sub>4</sub>Fe<sub>2</sub>O + ZrO<sub>2</sub>] in the Zr–Nb–Fe(O) alloys at 1000 ℃. Based on the current experimental findings, the phase relationships of the Zr–Nb–Fe(O) system at 1000 ℃ close to the Zr–Fe side were established.</p>

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Partial Phase Relationships in the Zr–Nb–Fe(O) System Focused on the Nature of (Zr, Nb)4Fe2O

  • 期刊论文

  • 发表日期：

    2025年10月4日

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  • Minfang Zeng,
  • Jianlie Liang,
  • Junyi Liang,
  • Tonghan Yang,
  • Guangfeng Li,
  • Xuehong Cui,
  • Mengyi Wang

摘要

The fcc-based (Zr, Nb)2Fe phase was previously recognized as a stable compound in the Zr–Nb–Fe system. Our study shows that (Zr, Nb)2Fe is an O-stabilized phase (Zr, Nb)4Fe2O. The results indicate that the (Zr, Nb)4Fe2O is based on the ternary Zr4Fe2Ox phase in the Zr–Fe–O system.This study has identified four four-phase equilibria consisting of [βZr + Zr(Nb, Fe)2 + (Zr, Nb)4Fe2O + liquid], [βZr + Zr(Nb, Fe)2 + αZr + (Zr, Nb)4Fe2O], [ZrFe2 + Zr(Nb, Fe)2 + (Zr, Nb)4Fe2O + liquid] and [αZr + Zr(Nb, Fe)2 + (Zr, Nb)4Fe2O + ZrO2] in the Zr–Nb–Fe(O) alloys at 1000 ℃. Based on the current experimental findings, the phase relationships of the Zr–Nb–Fe(O) system at 1000 ℃ close to the Zr–Fe side were established.