Anomalous characteristics of Ti-Nb-Ta-Zr alloy for biomedical applications

Mitsuo Niinomi, Masaaki Nakai, Toshikazu Akahori, Harumi Tsutsumi

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

2 Citations (Scopus)

Abstract

Negative thermal expansion, i.e. a type of shrinkage that occurs during heating, was observed in cold-rolled Ti-29Nb-13Ta-4.6Zr alloy (mass%) (TNTZ). The reduction ratio of cold rolling was systematically changed, and then the thermal expansion rate was measured using a dilatometer. The cyclicity of thermal expansion was also examined for the cold-rolled TNTZ. Further, the effect of oxygen content on the thermal expansion behavior of the cold rolled TNTZ was examined. With an increase in the reduction ratio of cold rolling, the thermal expansion rate of TNTZ cold-rolled parallel to the rolling direction (RD) decreases, but it increases in TNTZ cold-rolled parallel to the transverse direction (TD). The cyclicity of above-mentioned anomalous thermal expansion is observed in a temperature range below 473 K, but it is not observed when the specimen is heated to above 573 K in the first cycle. The oxygen suppresses the negative thermal expansion behavior of TNTZ.

Original languageEnglish
Title of host publicationTHERMEC 2009
EditorsTara Chandra, Tara Chandra, Tara Chandra, N. Wanderka, N. Wanderka, N. Wanderka, Walter Reimers, Walter Reimers, Walter Reimers, M. Ionescu, M. Ionescu, M. Ionescu
PublisherTrans Tech Publications Ltd
Pages16-21
Number of pages6
ISBN (Print)0878492941, 9780878492947
DOIs
Publication statusPublished - 2010 Jan 1
Event6th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2009 - Berlin, Germany
Duration: 2009 Aug 252009 Aug 29

Publication series

NameMaterials Science Forum
Volume638-642
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Other

Other6th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2009
CountryGermany
CityBerlin
Period09/8/2509/8/29

Keywords

  • Biomedical applications
  • Deformation-induced martensite
  • Invar behavior
  • Negative thermal expansion
  • Oxygen
  • Ti-Nb-Ta-Zr alloy

ASJC Scopus subject areas

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

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  • Cite this

    Niinomi, M., Nakai, M., Akahori, T., & Tsutsumi, H. (2010). Anomalous characteristics of Ti-Nb-Ta-Zr alloy for biomedical applications. In T. Chandra, T. Chandra, T. Chandra, N. Wanderka, N. Wanderka, N. Wanderka, W. Reimers, W. Reimers, W. Reimers, M. Ionescu, M. Ionescu, & M. Ionescu (Eds.), THERMEC 2009 (pp. 16-21). (Materials Science Forum; Vol. 638-642). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/MSF.638-642.16