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Modeling the dislocation-void interaction in a dislocation dynamics simulation

Published online by Cambridge University Press:  10 March 2011

Sylvain Queyreau ,
Ghiath Monnet ,
Brian D. Wirth  and
Jaime Marian
Sylvain Queyreau
Affiliation:
Nuclear Engineering Dept., UC Berkeley, Berkeley, CA 94720, USA. Lawrence Livermore National Laboratory, P. O. Box 808, Livermore, CA 94551, USA.
Ghiath Monnet
Affiliation:
EDF-R&D, MMC Dept., Avenue des Renardieres, 77818 Moret-sur-Loing, France.
Brian D. Wirth
Affiliation:
Nuclear Engineering Dept., University of Tennessee, Knoxville, TE 37996, USA.
Jaime Marian
Affiliation:
Lawrence Livermore National Laboratory, P. O. Box 808, Livermore, CA 94551, USA.
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Abstract

In this paper, we propose a model for dislocation-void interaction in Iron that is amenable to dislocation dynamics simulations. Voids are treated as shearable particles whose shear resistance and thermal activation parameters are obtained from atomistic calculations. The modeling is first validated by direct comparison with molecular dynamics calculations. A good agreement is found especially at 0K and high temperature. The interaction with a random distribution of voids is then investigated.

Keywords

dislocationssimulationdefects

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