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Download fileSimulating radiation damage in a bcc Fe system with embedded yttria nanoparticles
journal contribution
posted on 2015-11-30, 12:38 authored by Tomas Lazauskas, Steven KennySteven Kenny, Roger Smith, Gurpree Nagra, Mana Dholakia, M.C. ValsakumarWe present a molecular dynamics study of radiation damage arising from nuclear collisions close to embedded yttria nanoparticles in a bcc Fe matrix. The model assumes a perfect body-centred cubic (bcc) iron matrix in which yttria nano-particles are embedded as a simplified model of an Oxide Dispersion Strengthened steel. It is shown how the nano-particles interact
with nearby initiated collision cascades, through cascade blocking and absorbing energy. Fe defects accumulate at the interface both directly from the ballistic collisions and also by attraction of defects generated close by. The nano-particles generally remain intact during a radiation event and release absorbed energy over times longer than the ballistic phase of the collision cascade.
Funding
The work was funded by EPSRC grant EP/I01240.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Materials
Published in
JOURNAL OF NUCLEAR MATERIALSVolume
437Issue
1-3Pages
317 - 325 (9)Citation
LAZAUSKAS, T. ...et al., 2013. Simulating radiation damage in a bcc Fe system with embedded yttria nanoparticles. Journal of Nuclear Materials, 437(1-3), pp. 317-325.Publisher
© ElsevierVersion
- AM (Accepted Manuscript)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2013Notes
This paper was accepted for publication in the journal Journal of Nuclear Materials and the definitive published version is available at http://dx.doi.org/10.1016/j.jnucmat.2013.02.016ISSN
0022-3115Publisher version
Language
- en