Mechanical properties of biomedical β-type titanium alloy with rare-earth metal oxide particles formed by rare-earth metal addition

Junko Hieda, Mitsuo Niinomi, Masaaki Nakai, Ken Cho

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

2 Citations (Scopus)

Abstract

The formation of a dispersion of rare-earth metal oxide particles in Ti-29Nb-13Ta-4.6Zr alloy (TNTZ) was studied in order to improve the mechanical properties of TNTZ without increasing its Young's modulus. This dispersion of oxide particles was formed through a reaction between the added rare-earth metal and the oxygen contained in TNTZ. Yttrium or cerium was added to TNTZ for this purpose. Well-dispersed oxide particles are formed, especially in the case of the Y-added TNTZ. Low Young's modulus is retained in both Y- and Ce-added TNTZ. The tensile strength of Y-added TNTZ with a Y concentration of 0.1 mass% improves by 11% as compared to that of TNTZ. The 0.2% proof stress slightly increases in Y- and Ce-added TNTZ for Y concentrations below 0.1 mass% and a Ce concentration of 0.05 mass%.

Original languageEnglish
Title of host publicationTMS 2014 - 143rd Annual Meeting and Exhibition, Supplemental Proceedings
PublisherMinerals, Metals and Materials Society
Pages129-135
Number of pages7
ISBN (Print)9781118889725
DOIs
Publication statusPublished - 2014
Event143rd Annual Meeting and Exhibition, TMS 2014 - San Diego, CA, United States
Duration: 2014 Feb 162014 Feb 20

Publication series

NameTMS Annual Meeting

Other

Other143rd Annual Meeting and Exhibition, TMS 2014
Country/TerritoryUnited States
CitySan Diego, CA
Period14/2/1614/2/20

Keywords

  • Dispersion strengthening
  • Mechanical properties
  • Oxide particles
  • Rare-earth metal
  • β-type titanium alloy

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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