Low young's modulus TiNbO with high strength and good plasticity

Qiang Li, Dong Ma, Junjie Li, Mitsuo Niinomi, Masaaki Nakai, Yuichiro Koizumi, Daixiu Wei, Tomoyuki Kakeshita, Takayoshi Nakano, Akihiko Chiba, Kai Zhou, Deng Pan

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Oxygen was added to Ti38Nb (mass%) alloys to improve their mechanical properties. Ti38NbxO (x = 0.13, 0.24, 0.46, mass%) alloys were prepared by arc melting, and subsequently subjected to homogenization, hot rolling, and solution treatment. It was found that adding oxygen suppresses the martensite transformation and exhibits strong solution strengthening effect. Single ¢ phase is obtained in Ti38Nb0.24O, whereas Ti38Nb0.13O is composed of both ¡AA and ¢ phases. Both alloys exhibit double yielding phenomena during tension, indicating a stress-induced martensitic transformation. Ti38Nb0.46O exhibits a non-linear deformation, a low Young's modulus of 62 GPa, high tensile strength up to 780 MPa, and elongation around 23%, which are promising characteristics for biomedical applications.

Original languageEnglish
Pages (from-to)858-860
Number of pages3
JournalMaterials Transactions
Volume59
Issue number5
DOIs
Publication statusPublished - 2018

Keywords

  • Biomaterials
  • Mechanical property
  • Oxygen
  • Ti alloys

ASJC Scopus subject areas

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

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  • Cite this

    Li, Q., Ma, D., Li, J., Niinomi, M., Nakai, M., Koizumi, Y., Wei, D., Kakeshita, T., Nakano, T., Chiba, A., Zhou, K., & Pan, D. (2018). Low young's modulus TiNbO with high strength and good plasticity. Materials Transactions, 59(5), 858-860. https://doi.org/10.2320/matertrans.M2018021