Atomic modeling of irradiation-induced hardening

David Rodney

doi:10.1016/j.crhy.2007.08.005

Atomic modeling of irradiation-induced hardening

David Rodney ¹

¹ SIMAP-GPM2, INP Grenoble, CNRS/UJF, BP46, 38402 Saint Martin d'Hères, France

Comptes Rendus. Physique, Materials subjected to fast neutron irradiation, Volume 9 (2008) no. 3-4, pp. 418-426.

Abstract
Résumé

We review recent results obtained by Molecular Dynamics (MD) simulations on the elementary interaction mechanisms between dislocations and irradiation defects, with the aim to obtain a fundamental understanding of plasticity in irradiated metals. The reactions obtained included defect shear, drag and absorption in edge and screw dislocations. We present the state of the art in both FCC and BCC metals and discuss the challenges faced by MD simulations, in particular in BCC metals in order to realistically simulate the thermally-activated glide of screw dislocations in the presence of obstacles.

Nous passons en revue des résultats récents obtenus par simulations en Dynamique Moléculaire (DM) sur les mécanismes élémentaires d'interaction entre dislocations et défauts d'irradiation, dans le but d'acquérir une connaissance approfondie de la plasticité des matériaux irradiés. Les réactions observées incluent le cisaillement, l'entraînement ainsi que l'absorption des défauts d'irradiation par des dislocations soient vis soient coin. Nous présentons l'état de l'art pour les métaux de structure Cubique à Faces Centrées (CFC) ainsi que Cubique Centrée (CC). Nous discutons les difficultés rencontrées dans les simulations par DM, en particulier dans les métaux CC, afin de simuler de façon réaliste le glissement thermiquement activé des dislocations en présence d'obstacles.

Published online: 2008-02-08

DOI: 10.1016/j.crhy.2007.08.005

Keywords: 61.72.Bb, Molecular dynamics, Irradiation, Plasticity
Mots-clés : Dynamique moléculaire, Irradiation, Plasticité

Author's affiliations:

David Rodney ¹

¹ SIMAP-GPM2, INP Grenoble, CNRS/UJF, BP46, 38402 Saint Martin d'Hères, France

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     author = {David Rodney},
     title = {Atomic modeling of irradiation-induced hardening},
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     pages = {418--426},
     publisher = {Elsevier},
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     year = {2008},
     doi = {10.1016/j.crhy.2007.08.005},
     language = {en},
}

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David Rodney. Atomic modeling of irradiation-induced hardening. Comptes Rendus. Physique, Materials subjected to fast neutron irradiation, Volume 9 (2008) no. 3-4, pp. 418-426. doi : 10.1016/j.crhy.2007.08.005. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2007.08.005/

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