Role of nitrogen addition in stabilizing the γ phase of Biomedical Co-29Cr-6Mo alloy

Y. P. Li, J. S. Yu, S. Kurosu, Y. Koizumi, H. Matsumoto, A. Chiba

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

Three-dimensional atom probe observations and thermodynamic calculations revealed that the mechanism of γ-phase stabilization by N addition in the Co-29Cr-6Mo alloy is different from that in stainless steel: N addition does not lower the free energy of the γ phase in Co-29Cr-6Mo but increases the energy barrier and thus lowers the kinetic rate of the γ → ε transition through the formation of Cr-N short range order.

Original languageEnglish
Pages (from-to)29-32
Number of pages4
JournalMaterials Chemistry and Physics
Volume133
Issue number1
DOIs
Publication statusPublished - 2012 Mar 15
Externally publishedYes

Keywords

  • A. Alloy
  • A. Elements
  • D. Phase transition
  • D. Thermodynamic properties

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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