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<p>In the present work, an update of experimental knowledge and the thermodynamic description of the ternary B-Fe-V system was done with a focus on the V<sub>2</sub>FeB<sub>2</sub> ternary phase. For this purpose, several alloys containing the ternary phase were prepared and were investigated after long-term annealing at 600 and 1080&#xa0;°C by the methods of scanning electron microscopy, x-ray diffraction, and differential thermal analysis. The obtained results and knowledge about the ternary phase were used to improve the description of the boron-iron-vanadium ternary system. A new model for the ternary phase was used. The thermodynamic parameters for the VB, V<sub>3</sub>B<sub>4</sub>, and Fe<sub>2</sub>B borides were also modified. The calculation performed using the new thermodynamic database achieved a very good agreement with the experimental results.</p>

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The Reassessment of the Thermodynamic Description of the B-Fe-V System with Focus on the Ternary Phase

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年4月10日

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  • Viera Homolová,
  • Aleš Kroupa,
  • Adéla Zemanová,
  • František Kromka

摘要

In the present work, an update of experimental knowledge and the thermodynamic description of the ternary B-Fe-V system was done with a focus on the V2FeB2 ternary phase. For this purpose, several alloys containing the ternary phase were prepared and were investigated after long-term annealing at 600 and 1080 °C by the methods of scanning electron microscopy, x-ray diffraction, and differential thermal analysis. The obtained results and knowledge about the ternary phase were used to improve the description of the boron-iron-vanadium ternary system. A new model for the ternary phase was used. The thermodynamic parameters for the VB, V3B4, and Fe2B borides were also modified. The calculation performed using the new thermodynamic database achieved a very good agreement with the experimental results.