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Determination of the thermodynamic factor for the B2 FeAl phase from X-ray diffuse scattering data

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Abstract

The interdiffusion coefficient is related via the modified Darken equation to the tracer diffusivities of the constituents. The thermodynamic factor Φ entering the Darken equation for the interdiffusion coefficient is expressed in terms of the energy parameters which describe the ordering process in the binary alloy. Our calculations for Fe-Al alloys yield the dependence of Φ on the long-range order parameter. These calculations are performed with the parameters extracted from diffuse X-ray scattering data on FeAl.

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Authors and Affiliations

  1. Mater. Engin. Dept., BGU, Beer Sheva, Israel

    Vlad Liubich & David Fuks

  2. Dept. of Physics, Technion, 32000, Haifa, Israel

    Simon Dorfman

  3. Inst, für Metallforschung, Univ. Münster, D-48149, Münster, Germany

    Helmut Mehrer

Authors
  1. Vlad Liubich
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  2. Simon Dorfman
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  3. David Fuks
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  4. Helmut Mehrer
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Liubich, V., Dorfman, S., Fuks, D. et al. Determination of the thermodynamic factor for the B2 FeAl phase from X-ray diffuse scattering data. MRS Online Proceedings Library 527, 215–220 (1998). https://doi.org/10.1557/PROC-527-215

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  • DOI: https://doi.org/10.1557/PROC-527-215

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