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

Published online by Cambridge University Press:  10 February 2011

Vlad Liubich ,
Simon Dorfman ,
David Fuks  and
Helmut Mehrert
Vlad Liubich
Affiliation:
Mater. Engin. Dept., BGU, Beer Sheva, Israel
Simon Dorfman
Affiliation:
Mater. Engin. Dept., BGU, Beer Sheva, Israel Dept. of Physics, Technion, 32000 Haifa, Israel
David Fuks
Affiliation:
Mater. Engin. Dept., BGU, Beer Sheva, Israel
Helmut Mehrert
Affiliation:
Mater. Engin. Dept., BGU, Beer Sheva, Israel Inst. für Metallforschung, Univ. Münster, D-48149 Münster, Germany
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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.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 527: Symposium Z – Diffusion Mechanisms in Crystalline Materials , 1998 , 215
Copyright
Copyright © Materials Research Society 1998

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References

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