Development of new titanium alloys with changeable young's modulus for spinal fixation applications

Xiaoli Zhao, Mitsuo Niinomi, Masaaki Nakai

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

Abstract

This research focused on development of new titanium alloys with changeable Young's modulus for spinal fixation applications by taking advantage of deformation-induced phase transformation. The microstructures, Young's moduli, and tensile properties of metastable Ti-30Zr-x(Cr, Mo) alloys subjected to solution treatment (ST) and cold rolling (CR) were investigated. During cold rolling, deformation-induced phase transformation occurs in all these alloys. The change in Young's modulus after cold rolling is highly dependent on the type of deformation-induced phase. The decrease in Young's modulus after cold rolling is attributed to the deformation-induced α′ phase, while the increase in Young's modulus after cold rolling is attributed to the deformation-induced to phase in {332} mechanical twinning. Ti-30Zr-3Cr-3Mo alloy exhibiting excellent tensile properties and a changeable Young's modulus is a promising candidate for spinal fixation applications.

Original languageEnglish
Title of host publicationTi 2011 - Proceedings of the 12th World Conference on Titanium
Pages2063-2066
Number of pages4
Publication statusPublished - 2012 Dec 1
Event12th World Conference on Titanium, Ti 2011 - Beijing, China
Duration: 2011 Jun 192011 Jun 24

Publication series

NameTi 2011 - Proceedings of the 12th World Conference on Titanium
Volume3

Other

Other12th World Conference on Titanium, Ti 2011
CountryChina
CityBeijing
Period11/6/1911/6/24

Keywords

  • Changeable young's modulus
  • Deformation-induced phase
  • Mechanical properties
  • Microstructures
  • Titanium alloys
  • {332} mechanical twinning

ASJC Scopus subject areas

  • Ceramics and Composites

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