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<p>This study evaluated sintered Ti-30Zr-<i>x</i>Ta (0–15&#xa0;Vol.% Ta) alloys with rapid cooling heat treatment, seeking to modify their microstructure, microhardness property and micro-wear response. The heat treatment involved heating to 950&#xa0;°C for 30&#xa0;min, followed by rapid cooling in ice water (0&#xa0;°C). This process induced the transformation of the α′-Ti phase and the β-Ti phase. The presence of the phases was confirmed through XRD tests, while the microstructure evolution was analyzed through OM. The hardness of the samples was measured using Vickers microindentation, revealing a slightly increase in hardness due to the addition of Ta after treatment (422–520&#xa0;HV<sub>0.5</sub>). Linear reciprocating micro-wear tests findings demonstrated a reduction in both the coefficient of friction and the specific wear rate as the Ta concentration increased (~ 0.25 of the coefficient of friction and up to five times less, respectively) in comparison to the Ti30Zr alloy evidencing an enhanced micro-wear response.</p> Graphical abstract <p></p>

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Microwear response of quench heat-treated Ti30ZrxTa system with potential in biomedical fields

  • 期刊论文

  • 发表日期：

    2026年1月14日

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  • L. E. Delgado-Delgado,
  • D. Bravo-Barcenas,
  • R. Suárez-Martínez,
  • O. Jimenez,
  • E. Rodríguez-deAnda,
  • J. Chávez

摘要

This study evaluated sintered Ti-30Zr-xTa (0–15 Vol.% Ta) alloys with rapid cooling heat treatment, seeking to modify their microstructure, microhardness property and micro-wear response. The heat treatment involved heating to 950 °C for 30 min, followed by rapid cooling in ice water (0 °C). This process induced the transformation of the α′-Ti phase and the β-Ti phase. The presence of the phases was confirmed through XRD tests, while the microstructure evolution was analyzed through OM. The hardness of the samples was measured using Vickers microindentation, revealing a slightly increase in hardness due to the addition of Ta after treatment (422–520 HV0.5). Linear reciprocating micro-wear tests findings demonstrated a reduction in both the coefficient of friction and the specific wear rate as the Ta concentration increased (~ 0.25 of the coefficient of friction and up to five times less, respectively) in comparison to the Ti30Zr alloy evidencing an enhanced micro-wear response.

Graphical abstract