Ti-25Ta alloy with the best mechanical compatibility in Ti-Ta alloys for biomedical applications

Ying Long Zhou, Mitsuo Niinomi

Research output: Contribution to journalArticlepeer-review

122 Citations (Scopus)


The microstructures, dynamic elastic modulus, and mechanical properties of the Ti-25Ta (mass%) alloy are investigated in this study in order to assess its mechanical compatibility for biomedical applications. The microstructures are examined by X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The dynamic elastic modulus is measured by the resonance vibration method and the mechanical properties are determined from uniaxial tensile tests. The experimental results indicate that the Ti-25Ta alloy exhibits an orthorhombic martensite (α″) twinned structure after solution treatment. The Ti-25Ta alloy has the lowest elastic modulus and the highest ratio of strength to modulus among Ti-Ta alloys. Thus, the Ti-25Ta alloy exhibits the best mechanical compatibility among Ti-Ta alloys and is a promising candidate for novel metallic biomaterials.

Original languageEnglish
Pages (from-to)1061-1065
Number of pages5
JournalMaterials Science and Engineering C
Issue number3
Publication statusPublished - 2009 Apr 30


  • Elastic modulus
  • Mechanical compatibility
  • Metallic biomaterial
  • Strength
  • Ti-Ta alloy

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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