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<p>This work aimed to determine the effect of Fe addition on the stability of the β-phase, as well as on the mechanical and corrosion properties of the biomedical Ti–Nb–Zr alloy. Fe content ranged from 1 to 5 at.% in alloys fabricated by the arc melting technique under Ar atmosphere. The microstructure was assessed using X-ray diffraction and scanning electron microscopy. Microhardness and nanoindentation tests evaluated the mechanical properties, and potentiodynamic polarization tests the corrosion resistance. Results indicated that the β-phase stability is affected by the Fe addition, obtaining a β-Ti alloy for 5 at.%. This alloy also showed an increment of 40% in microhardness values and the best elastic recovery. The corrosion rate was also enhanced by 50% when 5 at.% of Fe is added into the alloy, as a consequence of the β stabilization. In conclusion, the Ti-15Nb-10Zr-5Fe alloy showed an excellent combination of properties for potential biomedical applications.</p> Graphical abstract <p></p>

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Analyzing the effect of Fe addition into Ti-20Nb-x-10Zr-xFe biomedical alloy fabricated by arc melting

  • 期刊论文

  • 发表日期：

    2024年12月31日

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  • F. Alavarado-Hernández,
  • E. Mihalcea,
  • O. Jimenez,
  • L. Olmos,
  • J. A. Avila-Olivera

摘要

This work aimed to determine the effect of Fe addition on the stability of the β-phase, as well as on the mechanical and corrosion properties of the biomedical Ti–Nb–Zr alloy. Fe content ranged from 1 to 5 at.% in alloys fabricated by the arc melting technique under Ar atmosphere. The microstructure was assessed using X-ray diffraction and scanning electron microscopy. Microhardness and nanoindentation tests evaluated the mechanical properties, and potentiodynamic polarization tests the corrosion resistance. Results indicated that the β-phase stability is affected by the Fe addition, obtaining a β-Ti alloy for 5 at.%. This alloy also showed an increment of 40% in microhardness values and the best elastic recovery. The corrosion rate was also enhanced by 50% when 5 at.% of Fe is added into the alloy, as a consequence of the β stabilization. In conclusion, the Ti-15Nb-10Zr-5Fe alloy showed an excellent combination of properties for potential biomedical applications.

Graphical abstract