Cobalt rich phase formation in metastable Cu-Co alloys by means of melt spinning

R. H. Yu*, J. Zhu, Xixiang Zhang, M. Knobel

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Metastable CoxCu100-x alloys with extended cobalt solubility (5 ≤ x ≤ 20), which can not be obtained by equilibrium methods, were prepared by melt spinning. The separation of the cobalt rich phase upon heating was monitored by X-ray diffraction and calorimatric measurements. The volume fraction of cobalt rich particles can not be determined using X-ray diffraction if the cobalt rich particle size is below a critical value. The separation of the cobalt rich phase seems to be a three step process including nucleation, growth, and coarsening. The non-isothermal kinetics of nucleation and growth of the cobalt rich phase were analysed in terms of a modified Kissinger model. The heat release during phase separation is closely related to the amount of cobalt dissolved in the copper matrix.

Original languageEnglish (US)
Pages (from-to)464-468
Number of pages5
JournalMaterials Science and Technology
Volume12
Issue number6
DOIs
StatePublished - Jan 1 1996

ASJC Scopus subject areas

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

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