Skip to Main content Skip to Navigation
Journal articles

Effect of sink strength dispersion on cluster size distributions simulated by cluster dynamics

Abstract : The microstructure evolution in irradiated materials can be conveniently modelled, at large scale, by cluster dynamics (CD). In this approach, the effect of the local environment of defect clusters is neglected. In this article, we first check the validity of this assumption by comparing CD to object kinetic Monte Carlo (OKMC) simulations. We show that for microstructures produced under irradiation, taking into account in CD only the average dependency of clusters' growth rate on volume fraction does not permit to reproduce reference OKMC results. Accordingly, the sink strength dispersion, quantified using OKMC, is introduced in CD, using a new formalism depending on the Voronoi volumes of defect clusters. CD calculations including sink strength dispersion are shown to be in better agreement with reference OKMC simulations and experimental observations than are classical CD calculations.
Complete list of metadatas

Cited literature [44 references]  Display  Hide  Download

https://hal-cea.archives-ouvertes.fr/cea-02495660
Contributor : Contributeur Map Cea <>
Submitted on : Monday, March 2, 2020 - 1:55:56 PM
Last modification on : Friday, October 9, 2020 - 10:02:48 AM
Long-term archiving on: : Wednesday, June 3, 2020 - 1:49:52 PM

File

paper.pdf
Files produced by the author(s)

Identifiers

Citation

Denise Carpentier, Thomas Jourdan, Pierre Terrier, Manuel Athenes, Yann Le Bouar. Effect of sink strength dispersion on cluster size distributions simulated by cluster dynamics. Journal of Nuclear Materials, Elsevier, 2020, https://doi.org/10.1016/j.jnucmat.2020.152068. ⟨10.1016/j.jnucmat.2020.152068⟩. ⟨cea-02495660⟩

Share

Metrics

Record views

135

Files downloads

56