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<p>A new superelastic Ti-20W-12Zr-4.5Sn (wt.%) alloy was prepared by arc-melting technique. The effect of solution treatment temperature on the phase constitutions, mechanical properties and recovery strain was investigated at room temperature. The results showed that the β grain size grew gradually when the solution treatment temperature increased from 700 to 900 °C. The yield strength (σ<sub>0.2</sub>) initially increased and then decreased with the solution treatment temperature increasing. However, the fracture strain increases monotonically from 5.7 to 29% with the solution treatment temperature increasing from 700 to 900 °C. The alloy solution treated at 750 °C exhibited a yield strength of 486&#xa0;MPa and the largest recovery strain of about 5.5 % with an elastic modulus of ~ 60.5 GPa. The yield strength increased to 597&#xa0;MPa for the alloy solution treated at 800 °C. This alloy shows promise as a biomedical material due to its excellent mechanical properties.</p>

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Superelastic Ti-W-Zr-Sn Metastable Titanium Alloys with High Yield Strength and Large Recovery Strain

  • 期刊论文

  • 发表日期：

    2025年11月3日

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  • Libo Ge,
  • Xiumei Pan,
  • Hao Liang,
  • Zitao Qin,
  • Yang Shao,
  • Huan Ma

摘要

A new superelastic Ti-20W-12Zr-4.5Sn (wt.%) alloy was prepared by arc-melting technique. The effect of solution treatment temperature on the phase constitutions, mechanical properties and recovery strain was investigated at room temperature. The results showed that the β grain size grew gradually when the solution treatment temperature increased from 700 to 900 °C. The yield strength (σ0.2) initially increased and then decreased with the solution treatment temperature increasing. However, the fracture strain increases monotonically from 5.7 to 29% with the solution treatment temperature increasing from 700 to 900 °C. The alloy solution treated at 750 °C exhibited a yield strength of 486 MPa and the largest recovery strain of about 5.5 % with an elastic modulus of ~ 60.5 GPa. The yield strength increased to 597 MPa for the alloy solution treated at 800 °C. This alloy shows promise as a biomedical material due to its excellent mechanical properties.