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Interdiffusion in Short-Wavelength Modulated Materials Studied by Monte-Carlo Simulations

Published online by Cambridge University Press:  25 February 2011

M. Atzmon
M. Atzmon*
Affiliation:
Division of Applied Sciences, Harvard University, Cambridge, MA 02138.
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Abstract

Interdiffusion in a two-dimensional compositionally modulated lattice has been studied by Monte-Carlo simulations. In the initial stages, the interdiffusion coefficient has been observed to change with time due to the development of short-range order simultaneously with the interdiffusion process. When the short-range order parameter approached its limiting value, the diffusion coefficient approached a constant value. The dependence of the interdiffusion coefficient on the modulation wavelength does not agree with the prediction of one-dimensional theories. For ordering alloy systems, the effective interdiffusion coefficient is positive, i.e., an initially present modulation decays in time, for all wavelengths.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 103 , 1987 , 277
Copyright
Copyright © Materials Research Society 1988

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Footnotes

*

Department of Nuclear Engineering, The University of Michigan, Ann Arbor, Michigan 48109-2104.

References

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