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Solute diffusion in alpha- and gamma-iron

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Abstract

The diffusion rates of chromium, vanadium, and hafnium in α- and γ-Fe have been determined by radiotracer techniques. The results are (in sq cm sec−1): α-Fe γ-Fe ChromiumD = 8.52 exp (−59,900/RT)D = 10.80 exp(−69,700/RT) VanadiumD = 3.92 exp (−57,600/RT)D = 0.25 exp (−63,100/RT) HafniumD = 1.31 exp (−69,300/RT)D = 3600 exp (−97,300/RT) The differences in diffusion rates are discussed in terms of the compressibility of the diffusing atom. Diffusion of chromium in γ-Fe was also measured by a microprobe analysis technique. The result is:D = 4.08 exp (−68,500/RT) Comparison is made between diffusion analysis by tracer techniques and by electron probe microanalysis.

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Authors and Affiliations

  1. Materials Department, Royal Aircraft Establishment, Farnborough, Hampshire, England

    A. W. Bowen (Scientific Officer)

  2. Department of Metallurgy, University of Manchester, UK

    G. M. Leak (Reader)

Authors
  1. A. W. Bowen
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  2. G. M. Leak
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Formerly with Department of Metallurgy, University of Manchester, Manchester, England

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Bowen, A.W., Leak, G.M. Solute diffusion in alpha- and gamma-iron. Metall Trans 1, 1695–1700 (1970). https://doi.org/10.1007/BF02642019

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