Mechanical properties of Ti-12Cr alloy with self-tunable Young's modulus for use in spinal fixation devices

Masaaki Nakai, Mitsuo Niinomi, Junko Hieda, Ken Cho

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

Abstract

Effect of grain diameter on Young's modulus and tensile properties was investigated using a representative titanium alloy with self-tunable Young's modulus, Ti-12Cr alloy for use in spinal fixation devices. The grain diameter can be changed systematically by changing solution-treatment temperature. With increasing grain diameter, the changes in Young's moduli of the alloys subjected to solution treatment are negligible. Additionally, with increasing grain diameter, the increases in Young's modulus during deformation are almost same. It indicates that the deformation-induced ω phase transformation is not sensitive to the grain diameter. Further, the strengths of the alloys decrease slightly, while the ductility of the alloys decreases drastically as increases in grain diameter. Therefore, a small grain diameter is preferred for developing new titanium alloys with changeable Young's modulus for use in spinal fixation devices.

Original languageEnglish
Title of host publication8th Pacific Rim International Congress on Advanced Materials and Processing 2013, PRICM 8
PublisherJohn Wiley and Sons Inc.
Pages1551-1556
Number of pages6
ISBN (Print)9781632660008
DOIs
Publication statusPublished - 2013
Event8th Pacific Rim International Congress on Advanced Materials and Processing 2013, PRICM 8 - Waikoloa, HI, United States
Duration: 2013 Aug 42013 Aug 9

Publication series

Name8th Pacific Rim International Congress on Advanced Materials and Processing 2013, PRICM 8
Volume2

Other

Other8th Pacific Rim International Congress on Advanced Materials and Processing 2013, PRICM 8
Country/TerritoryUnited States
CityWaikoloa, HI
Period13/8/413/8/9

Keywords

  • Deformation-induced ω phase transformation
  • Young's modulus
  • β-type titanium alloy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

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