Young's modulus changeable titanium alloys for orthopaedic applications

Masaaki Nakai, Mitsuo Niinomi, Xiaoli Zhao, Xingfeng Zhao

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

1 Citation (Scopus)

Abstract

A novel biomedical titanium alloy with the ability to undergo self adjustment in its Young's modulus was developed. In spinal fixation devices, the Young's modulus of the metallic implant rod should be sufficiently high to suppress springback for the surgeon, but should also be sufficiently low to prevent stress shielding for the patient. Therefore, deformation-induced ? phase transformation was introduced into β-type titanium alloys so that the Young's modulus of only the deformed part would increase during operation, while that of the non-deformed part would remain low. The increase in the Young's modulus due to cold rolling was investigated for a binary Ti-12Cr alloy (mass%). Microstructural observation and Young's modulus measurement reveal that the Ti-12Cr alloy undergoes deformation-induced ? phase transformation and exhibits the increase in the Young's modulus by deformation.

Original languageEnglish
Title of host publicationTHERMEC 2011
PublisherTrans Tech Publications Ltd
Pages557-560
Number of pages4
ISBN (Print)9783037853030
DOIs
Publication statusPublished - 2012 Jan 1
Event7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011 - Quebec City, QC, Canada
Duration: 2011 Aug 12011 Aug 5

Publication series

NameMaterials Science Forum
Volume706-709
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Other

Other7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011
CountryCanada
CityQuebec City, QC
Period11/8/111/8/5

Keywords

  • Beta-type titanium alloy
  • Biomaterial
  • Deformation-induced phase transformation.
  • Omega phase
  • Young's modulus

ASJC Scopus subject areas

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

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  • Cite this

    Nakai, M., Niinomi, M., Zhao, X., & Zhao, X. (2012). Young's modulus changeable titanium alloys for orthopaedic applications. In THERMEC 2011 (pp. 557-560). (Materials Science Forum; Vol. 706-709). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/MSF.706-709.557