Microstructures and mechanical properties of Ti-50 mass% Ta alloy for biomedical applications

Ying Long Zhou, Mitsuo Niinomi

Research output: Contribution to journalArticlepeer-review

83 Citations (Scopus)

Abstract

The microstructures and resulting mechanical properties of Ti-50 mass% Ta alloy were investigated for biomedical applications. The microstructures were examined using an X-ray diffraction (XRD) analysis, a scanning electron microscopy (SEM) and a transmission electron microscopy (TEM), the dynamic elastic modulus was measured by the vibration resonance way and the tensile properties by a tensile test. Ti-50 mass% Ta alloy exhibits the orthorhombic martensite (α″) structure after the given solution treatment, and this microstructure is sensitive to both aging temperature and time. The different microstructures precipitate during the subsequent aging treatments, resulting in various mechanical properties. The α + β microstructure obtained by aging at 873 K for 259.2 ks exhibits a lower modulus, better mechanical biocompatibility and moderate elongation to failure, hence it is more suitable than the other microstructures for biomedical applications.

Original languageEnglish
Pages (from-to)535-542
Number of pages8
JournalJournal of Alloys and Compounds
Volume466
Issue number1-2
DOIs
Publication statusPublished - 2008 Oct 20

Keywords

  • Mechanical properties
  • Metals and alloys
  • Microstructure
  • Precipitation
  • Quenching

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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