Effect of small change in chemical composition of TNTZ used in biomedical applications on its superelastic behavior

M. Niinomi, T. Akahori, M. Nakai, N. Kawakita

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The Nb content of TNTZ (Ti-29Nb-13TaA6Zr) was changed by 1 mass% to 2 mass% below 30 mass%. The change in the behavior of functionalities such as superelasticity and the shape- memory effect was investigated by tensile loading-unloading tests, X-ray analysis and differential scanning calorimetric (DSC) analysis. When the Nb content is below approximately 28 mass%, the tensile loading-unloading stress-strain curve is similar to that representing the general shape-memory behavior, which occurs due to deformation induced martensitic transformation and its reversion. When the Nb content ranges from approximately 29 mass% to 30 mass%, the tensile loading-unloading curve exhibits superelastic behavior that cannot be explained by deformation- induced martensitic transformation and its reversion. A change in the chemical content of Nb in TNTZ within a very narrow range alters the superelastic behavior of this alloy.

Original languageEnglish
Title of host publicationMedical Device Materials IV
Subtitle of host publicationProceedings of the Materials and Processes for Medical Devices Conference 2007
Pages130-135
Number of pages6
DOIs
Publication statusPublished - 2008 Dec 1
EventMedical Device Materials IV: Materials and Processes for Medical Devices Conference 2007 - Palm Desert, CA, United States
Duration: 2007 Sep 232007 Sep 25

Publication series

NameMedical Device Materials IV: Proceedings of the Materials and Processes for Medical Devices Conference 2007

Other

OtherMedical Device Materials IV: Materials and Processes for Medical Devices Conference 2007
CountryUnited States
CityPalm Desert, CA
Period07/9/2307/9/25

ASJC Scopus subject areas

  • Biomedical Engineering
  • Biomaterials

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