Fatigue properties and microstructure of newly developed Ti-29Nb-14Ta-4.6Zr for biomedical applications

Toshikazu Akahori, Mitsuo Niinomi, Tomoya Maekawa, Hisao Fukui, Akihiro Suzuki

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

CP titanium and titanium alloys have been used as biomaterials. Recently, β type titanium alloy, which has good biocompatibility, low modulus, excellent balance of strength and ductility, is widely expected to use for biomedical applications. Very recently, Ti-29Nb-13Ta-4.6Zr alloy is newly designed and developed for biomedical applications. The new alloy is composed of non-toxic elements such as Nb, Ta, and Zr. In present study, various phases appeared in the new alloy according to the various aging treatments were characterized by hardness tests and microstructural observations. Tensile and fatigue properties of the new alloy were also investigated with relating microstructure. Precipitated phases distributed homogeneously over the whole specimen are α and ω phases, when the new alloy is aged at 673 K for 259.2 ks after solution treatment at 1063 K for 3.6 ks. The best balance of strength and elongation in the new alloy was obtained by the condition of 673 K for 259.2 ks after solution treatment at 1063 K for 3.6 ks. Fatigue limit of the new alloy aged at 673 K for 259.2 ks is around 700 MPa.

Original languageEnglish
Pages (from-to)715-722
Number of pages8
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume66
Issue number7
DOIs
Publication statusPublished - 2002 Jul

Keywords

  • Fatigue properties and tensile properties
  • Microstructure
  • Non-toxic element
  • β type titanium alloy

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Fatigue properties and microstructure of newly developed Ti-29Nb-14Ta-4.6Zr for biomedical applications'. Together they form a unique fingerprint.

  • Cite this