| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Mendelev, M. I.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2013Comparison of molecular dynamics simulation methods for the study of grain boundary migrationcitations
- 2007Solid-liquid phase diagrams for binary metallic alloyscitations
- 2004Development of an interatomic potential for phosphorus impurities in α-ironcitations
- 2004Computer simulation of the elastically driven migration of a flat grain boundarycitations
- 2003Development of new interatomic potentials appropriate for crystalline and liquid ironcitations
- 2002Impurity effects on grain boundary migrationcitations
- 2001KINK MODEL FOR EXTENDED DEFECT MIGRATION IN THE PRESENCE OF DIFFUSING IMPURITIEScitations
Places of action
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article
KINK MODEL FOR EXTENDED DEFECT MIGRATION IN THE PRESENCE OF DIFFUSING IMPURITIES
Abstract
The mobility of extended defects in solids (e.g., grain boundaries, anti-phase boundaries, dislocations, ferroelectric and magnetic domain walls) is often controlled by their interactions with impurities that can move diffusively. In this paper, we develop a theoretical model for extended defect migration in the presence of diffusing impurities which is valid in cases where impurity drag is significant. Model predictions of boundary velocity versus driving force, bulk impurity concentration, impurity diffusivity and temperature were shown to be in good agreement with kinetic Monte Carlo simulations based on an Ising model. At low temperatures and/or sufficiently large bulk concentrations, the kink model predicts that the boundary mobility is independent of the bulk impurity concentration. The activation energy for boundary migration is shown to depend on the formation energy of kinks on the boundary, the heat of segregation and the activation energy for bulk diffusion. The dependence on the kink formation energy remains even in the strong impurity drag limit. The present model is compared with earlier continuum models.