Title: Lattice Contraction in the Rim Zone as Controlled by Recrystallization: Additional Evidence
Citation: JOURNAL OF NUCLEAR MATERIALS vol. 372 p. 416-420
Publication Year: 2008
JRC N°: JRC44010
ISSN: 0022-3115
URI: http://www.elsevier.com/locate/jnucmat
DOI: 10.1016/j.jnucmat.2007.03.173
Type: Articles in periodicals and books
Abstract: Additional micro X-ray diffraction measurements of the lattice constant are described in the rim zone of a BR3-fuel irradiated under LWR-fuel conditions up to an average burn-up of 68.5 GWd/tM. Though signs of the so-called rim-transformation, with peripheral local burn-up enhancement, porosity increase and Xe-depletion, were found in the fuel, the traditionally accompanying lattice contraction verified in standard high burn-up LWR-fuels, was not detected. The absence of this feature is attributed to the lack of pellet-edge recrystallization in the present case, which likely impeded the release of accumulate strains.
JRC Directorate:Nuclear Safety and Security

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