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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

REFERENCES

[1] Eggersmann, H., Sepiol, B., and Mehrer, H., in Diffusion in Materials–DIMAT 96, Mehrer, H., Herzig, Chr., Stolwijk, N. A., and Bracht, H. (Eds.), Scitec Publication, 1997 and Defect and Diffusion Forum 143–147 (1997) 339.Google Scholar
[2] Philibert, J., Atom Movements–Diffusion and Mass Transport in Solids, Les Editions de Physique, 1991.Google Scholar
[3] Manning, J.R. Diffusion kinetics of atoms in crystals, van Norstrand, 1968.Google Scholar
[4] Jacobson, N.S. and Mehrotran, G.M., Metal. Trans. 24B (1993) 481.Google Scholar
[5] Semenovskaya, S.V., Physics status solidi b 64 (1974) 291; S.V. Semenovskaya and D.M. Umidov, Physics status solidi b 64 (1974) 627.Google Scholar
[6] Khachaturyan, A.G., Theory of Structural Transformations in Solids, John Wiley, New York, 1983.Google Scholar
[7] Xingjun, Liu and Shiming, Hao, CALPHAD 17 67 (1993).Google Scholar
[8] Mehrer, H., Materials Transactions, JIM, 37, 1259, (1996).Google Scholar