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<p>The novel Ti-Fe-Nb alloys was obtained by replacing some Ti elements with a small amount of Nb element. With the increase in Nb content, the particle sizes and contents of α-Ti and TiFe phases in Ti-Fe-Nb alloys are further reduced, while the corresponding content and particle sizes of β-phase are further increased. The Ti<sub>75</sub>Fe<sub>20</sub>Nb<sub>5</sub> alloy has the yield strength of 1615&#xa0;MPa and maximum plastic strain (&gt;21.3%). The elastic modulus of Ti<sub>75</sub>Fe<sub>20</sub>Nb<sub>5</sub> alloy is 1.6-5 times that of dense and hard cortical bone (10-30 GPa). The novel Ti-Fe-Nb ternary alloys with excellent mechanical properties are expected to become a biomaterial in the medical field and a structural material in the engineering field.</p>

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Microstructure and Mechanical Properties of Novel Ti-Fe-Nb Alloys with High Specific Strength and Low Elastic Modulus

  • 期刊论文

  • 发表日期：

    2025年9月29日

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  • Qingwei Luo,
  • Fei Jiao,
  • Jia Li,
  • Peiyou Li

摘要

The novel Ti-Fe-Nb alloys was obtained by replacing some Ti elements with a small amount of Nb element. With the increase in Nb content, the particle sizes and contents of α-Ti and TiFe phases in Ti-Fe-Nb alloys are further reduced, while the corresponding content and particle sizes of β-phase are further increased. The Ti75Fe20Nb5 alloy has the yield strength of 1615 MPa and maximum plastic strain (>21.3%). The elastic modulus of Ti75Fe20Nb5 alloy is 1.6-5 times that of dense and hard cortical bone (10-30 GPa). The novel Ti-Fe-Nb ternary alloys with excellent mechanical properties are expected to become a biomaterial in the medical field and a structural material in the engineering field.