Effects of zirconium addition on microstructures and mechanical properties of Co-29Cr-6Mo alloy

Sang Hak Lee, Tomo Uchikanezaki, Naoyuki Nomura, Mitsuru Nakamura, Akihiko Chiba

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

Co-29Cr-6Mo alloys consisting of 0-1.76% Zr were prepared and heat-treated at 1210°C for 2h or 1230°C for 3h. Three types of precipitates were identified. With more than 0.37% Zr content, precipitates are mixtures of a phase and (Zr, Mo)-rich phase. The α phase dissolves into a matrix and the (Zr, Mo)-rich phases change its composition into a Zr-rich phase with heat treatment. An alloy with a solid solution containing 0.01% Zr exhibits improved mechanical properties.

Original languageEnglish
Pages (from-to)1084-1088
Number of pages5
JournalMaterials Transactions
Volume48
Issue number5
DOIs
Publication statusPublished - 2007 May

Keywords

  • Biomaterial
  • Cobalt chromium molybdenum alloy
  • Heat treatment
  • Mechanical properties
  • Microstructure
  • Zirconium

ASJC Scopus subject areas

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

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