Changes in mechanical properties of Ti alloys in relation to alloying additions of Ta and Hf

Ying Long Zhou, Mitsuo Niinomi, Toshikazu Akahori

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)

Abstract

The effects of Ta and Hf on the dynamic Young's moduli and tensile properties of Ti-Ta and Ti-Hf alloys for biomedical applications are comparatively studied in this paper. It is found that with increasing Hf content, the dynamic Young's modulus of the Ti-Hf alloy gently decreases and its tensile strength keeps on increasing. In contrast, with increasing Ta content, the dynamic Young's modulus of the Ti-Ta alloys first decreases, reaches a minimum value of 69 GPa and then increases. In parallel, the tensile strength first increases, reaches a maximum value of 587 MPa, and then slightly decreases. It is shown that the addition of Hf has a slight influence on the dynamic Young's modulus and a strong influence on the tensile properties of the Ti-Hf alloy, while an increase of Ta content has a strong effect on both the dynamic Young's modulus and tensile properties of the Ti-Ta alloy.

Original languageEnglish
Pages (from-to)153-156
Number of pages4
JournalMaterials Science and Engineering A
Volume483-484
Issue number1-2 C
DOIs
Publication statusPublished - 2008 Jun 15

Keywords

  • Dynamic Young's modulus
  • Metallic biomaterial
  • Tensile property
  • Ti-Hf alloy
  • Ti-Ta alloy

ASJC Scopus subject areas

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

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