Effects of Ta content on Young's modulus and tensile properties of binary Ti-Ta alloys for biomedical applications

Ying Long Zhou, Mitsuo Niinomi, Toshikazu Akahori

Research output: Contribution to journalArticlepeer-review

291 Citations (Scopus)

Abstract

The effects of Ta content on the microstructures, dynamic Young's modulus and tensile properties of the quenched Ti-Ta alloys were investigated for biomedical applications. The microstructures were examined using a scanning electron microscopy (SEM) and an X-ray diffraction (XRD) analysis. The results indicate that the microstructures of the quenched binary Ti-Ta alloys are sensitive to Ta content. The Ti-Ta alloys exhibit lamellar HCP martensite (α′) structure at a Ta content below 20%, needle-like orthorhombic martensite (α″) structure at a Ta content between 30-50%, metastable β+α″ structure at a Ta content of 60%, and single metastable structure at a Ta content above 60%. The dynamic Young's modulus and tensile properties of the binary Ti-Ta alloys depend strongly on Ta content. Ti-30% Ta and 70% Ta alloys have much lower modulus and a good combination of high strength and low modulus among all the studied Ti-Ta alloys. They have the great potential to become new candidates for biomedical applications.

Original languageEnglish
Pages (from-to)283-290
Number of pages8
JournalMaterials Science and Engineering A
Volume371
Issue number1-2
DOIs
Publication statusPublished - 2004 Apr 25

Keywords

  • Biomedical implant material
  • Microstructure
  • Solution treatment
  • Tensile property
  • Ti-Ta alloy
  • Young's modulus

ASJC Scopus subject areas

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

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