Super elastic functional β titanium alloy with low young's modulus for biomedical applications

M. Niinomi, T. Akahori, Y. Hattori, K. Morikaw, T. Kasugu, H. Fukui, A. Suzuki, K. Kyo, S. Niwa

研究成果: Conference contribution

3 被引用数 (Scopus)

抄録

The low modulus β type titanium alloy, Ti-29Nb-13Ta-4.6Zr, was designed, and then the practical level ingot of the alloy was successfully fabricated by Levicast method. The mechanical and biological compatibilities, and super elastic behavior of the alloys were investigated in this study. The mechanical performance of tensile properties and fatigue strength of the alloy are equal to or greater than those of conventional biomedical Ti-6Al-4V ELI. Young's modulus of the alloy is much lower than that of Ti-6Al-4V ELI, and increases with the precipitation of α phase or ω phase in the β matrix phase. The compatibility of the alloy with bone is excellent. Low modulus of the alloy is effective to enhance the healing of bone fracture and remodeling of bone. Super elastic behavior is observed in Ti-29Nb-13Ta-4.6Zr conducted with short time solution treatment after heavy cold working. Total elastic strain in that case is around 2.8 %. The mechanism of the super elastic behavior of Ti-29Nb-13Ta-4.6Zr is still unclear.

本文言語English
ホスト出版物のタイトルTitanium, Niobium, Zirconium, and Tantalum for Medical and Surgical Applications
出版社American Society for Testing and Materials
ページ135-150
ページ数16
1471
ISBN(印刷版)0803134975, 9780803134973
出版ステータスPublished - 2006
イベントASTM Symposiun on Titanium, Niobium, Zirconium, and Tantalum for Medical and Surgical Applications - Washington, DC, United States
継続期間: 2005 11月 92005 11月 10

出版物シリーズ

名前ASTM Special Technical Publication
番号1471
ISSN(印刷版)0066-0558

Other

OtherASTM Symposiun on Titanium, Niobium, Zirconium, and Tantalum for Medical and Surgical Applications
国/地域United States
CityWashington, DC
Period05/11/905/11/10

ASJC Scopus subject areas

  • 工学(全般)

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