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The interaction of P atoms and radiation defects with grain boundaries in an alpha-Fe matrix

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journal contribution
posted on 04.02.2013, 11:16 by Hurryramsingh Hurchand, Steven KennySteven Kenny, Roger SmithRoger Smith
Classical molecular dynamics simulations have been employed to investigate the influence of P impurity atoms close to grain boundaries in α-Fe. Static calculations have been performed to determine the energetics of P and Fe defects in the grain boundary region for three symmetrical tilt grain boundaries, Σ5(3 1 0)[0 0 1], Σ41(9 1 0)[0 0 1] and Σ25(4 3 0)[0 0 1]. The simulations are carried using two different embedded atom Fe potentials, one of which includes the effect of second nearest neighbours. Both potentials produce quantitatively and qualitatively similar results for the static calculations. It has been shown that P atoms preferrentially segregate to the free volume region in the grain boundary plane. For collision cascade simulations the second nearest-neighbour model is found to predict a higher number of cascade defects in an irradiated perfect Fe matrix.

History

School

  • Science

Department

  • Mathematical Sciences

Citation

HURCHAND, H., KENNY, S.D. and SMITH, R., 2005. The interaction of P atoms and radiation defects with grain boundaries in an alpha-Fe matrix. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 228 pp. 146 - 150.

Publisher

© Elsevier

Version

AM (Accepted Manuscript)

Publication date

2005

Notes

This article was published in the journal, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms [© Elsevier] in a special issue, Proceedings of the Seventh International Conference on Computer Simulation of Radiation Effects in Solids. The definitive version is available at: p://dx.doi.org/10.1016/j.nimb.2004.10.037

ISSN

0168-583X

Language

en