Microstructures and mechanical properties of metastable Ti-30Zr-(Cr, Mo) alloys with changeable Young's modulus for spinal fixation applications

Xiaoli Zhao, Mitsuo Niinomi, Masaaki Nakai, Goro Miyamoto, Tadashi Furuhara

研究成果: Article査読

103 被引用数 (Scopus)

抄録

In order to develop a novel alloy with a changeable Young's modulus for spinal fixation applications, we investigated the microstructures, Young's moduli, and tensile properties of metastable Ti-30Zr-(Cr, Mo) alloys subjected to solution treatment (ST) and cold rolling (CR). All the alloys comprise a β phase and small athermal ω phase, and they exhibit low Young's moduli after ST. During CR, deformation-induced phase transformation occurs in all the alloys. The change in Young's modulus after CR is highly dependent on the type of deformation-induced phase. The increase in Young's modulus after CR is attributed to the deformation-induced ω phase on {3 3 2} mechanical twinning. Ti-30Zr-3Cr-3Mo (3Cr3Mo), which exhibits excellent tensile properties and a changeable Young's modulus, shows a smaller springback than Ti-29Nb-13Ta-4.6Zr, a β-type titanium alloy expected to be useful in spinal fixation applications. Thus, 3Cr3Mo is a potential candidate for spinal fixation applications.

本文言語English
ページ(範囲)3230-3236
ページ数7
ジャーナルActa Biomaterialia
7
8
DOI
出版ステータスPublished - 2011 8

ASJC Scopus subject areas

  • バイオテクノロジー
  • 生体材料
  • 生化学
  • 生体医工学
  • 分子生物学

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