Hyperfine Interactions

, Volume 54, Issue 1, pp 811–816

The activation energy for γ-Fe precipitates inCuFe

Authors

  • J. Klein
    • Fachbereich 12.1Universität des Saarlandes
  • T. Heck
    • Fachbereich 12.1Universität des Saarlandes
  • S. J. Campbell
    • Department of PhysicsUniversity College, University of New South Wales, ADFA
  • F. Aubertin
    • Fachbereich 12.1Universität des Saarlandes
  • U. Gonser
    • Fachbereich 12.1Universität des Saarlandes
Metals and Alloys

DOI: 10.1007/BF02396133

Cite this article as:
Klein, J., Heck, T., Campbell, S.J. et al. Hyperfine Interact (1990) 54: 811. doi:10.1007/BF02396133

Abstract

The precipitation of the fcc γ-phase of iron has been studied by a systematic series of isothermal and isochronal (0–48 h) heat treatments (300–800°C) on a supersaturated solution ofCuFe containing 3 at% Fe. The optimal conditions (450–600°C) for precipitation of the maximum fraction (90%) of iron attainable within 48 h in the form of γ-Fe have been delineated from analysis of the room temperature spectra. The time dependence for formation of γ-Fe precipitates is well described by the equation for long term annealing. An activation energyEa ≈0.6 eV for the formation of γ-Fe in Cu is obtained. It indicates short range rather than long range diffusion in theCuFe sample studied.

Copyright information

© J.C. Baltzer A.G. Scientific Publishing Company 1990