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APS » Journals » Phys. Rev. B » Volume 64 » Issue 9
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Phys. Rev. B 64, 094303 (2001) [5 pages]

Dynamics of self-interstitial migration in Fe-Cu alloys

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J. Marian1, B. D. Wirth1, J. M. Perlado2, G. R. Odette3, and T. Diaz de la Rubia1
1Chemistry and Materials Science Directorate, Lawrence Livermore National Laboratory, P.O. Box 808, L-353, Livermore, California 94550
2Instituto de Fusión Nuclear, Universidad Politécnica de Madrid, C/José Gutiérrez Abascal, 2, 28006 Madrid, Spain
3Department of Mechanical and Environmental Engineering, University of California, Santa Barbara, California 93106

Received 22 March 2001; published 14 August 2001

We have performed molecular dynamics simulations of self-interstitial atom diffusion in pure α-Fe and in a dilute Fe–1.0-at. % Cu alloy. We find that the presence of this oversized substitutional solute significantly alters the self-interstitial diffusion properties. We explain this through a mechanism directly based on the atomic strain field interactions between the Cu and the self-interstitial atom.

© 2001 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.64.094303
DOI:
10.1103/PhysRevB.64.094303
PACS:
66.30.Fq, 61.72.Bb, 61.82.Bg
 
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