The activation energy for γ-Fe precipitates inCuFe
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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 energyE a ≈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.
J. Hesse, Hyp. Int. 47 (1989) 357.CrossRef
D.G. Rancourt, S. Chehab and A. Lemarche, J. Magn. Magn. Mater. 78 (1989) in press.
S.J. Campbell and G.L. Whittle, Hyp. Int. 41 (1988) 551.
D.K.-H. Finkler, T. Heck, A.E. Maurer, S.J. Campbell and U. Gonser, J. Mater. Science 23 (1988) 3480.CrossRef
D.K.-H. Finkler, S.J. Campbell, J. Ferreirinho, G.H.J. Wantenaar and U. Gonser, J. Magn. Magn. Mater. 79 (1989) in press.
R. Borrelly, J.M. Pelletier and E. Pernoux, Scripta Met. 9 (1975) 747.CrossRef
D.K.-H. Finkler, A.E. Maurer, S.J. Campbell, T. Heck and U. Gonser, Physica 145B (1987) 335.
P. Haasen, ‘Physikalische Metallkunde’ (Springer, Berlin, 1974) p. 178.
P.G. Shewmon, ‘Diffusion in Solids’ (McGraw-Hill, New York, 1963) p. 40.
J. Klein, S.J. Campbell, F. Aubertin, U. Gonser and O. Schneeweiss(1989) in preparation.
- The activation energy for γ-Fe precipitates inCuFe
Volume 54, Issue 1-4 , pp 811-816
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- 1. Fachbereich 12.1, Universität des Saarlandes, Werkstoffwissenschaften, Bau 22, D-6600, Saarbrücken, F.R. Germany
- 2. Department of Physics, University College, University of New South Wales, ADFA, 2600, Canberra, ACT, Australia