This paper discusses the use of electron backscattered diffraction to characterize restructuring in a set of UO2 samples, irradiated in a pressurized water reactor at a burn-up between 35 and 73 GWd/tU, including standard UO2 samples and Cr-doped UO2 samples, to provide a better understanding of restructuring occurring both on the periphery and in the center of high-burn-up pellets. The formation of a high burn-up structure on the periphery of high burn-up UO2 was confirmed in our experiment. We found restructuring associated with bubble formation of all the samples in the central area, with higher irradiation temperatures when the burn-up exceeded 61 GWd/tU, regardless of their initial microstructure. This restructuring tended to progress with the increasing burn-up and to sub-divide the initial grains into sub-grains, with orientations close to that of the parent grains. Radial changes and differences between these samples showed that the burn-up and the temperature were not the only relevant parameters involved in restructuring.
Skip Nav Destination
Article navigation
21 November 2022
Research Article|
November 21 2022
Restructuring in high burn-up UO2 fuels: Experimental characterization by electron backscattered diffraction
Special Collection:
Radiation Effects in Materials
Isabelle Zacharie-Aubrun
;
Isabelle Zacharie-Aubrun
a)
(Investigation, Methodology, Writing – original draft)
1
CEA, DES, IRESNE, DEC, Cadarache
, F-13108 Saint-Paul-Lez-Durance, France
a)Author to whom correspondence should be addressed: isabelle.aubrun@cea.fr
Search for other works by this author on:
Rebecca Dowek
;
Rebecca Dowek
(Investigation, Methodology, Writing – review & editing)
1
CEA, DES, IRESNE, DEC, Cadarache
, F-13108 Saint-Paul-Lez-Durance, France
2
Institut Matériaux Microélectronique Nanosciences de Provence-IM2NP, Aix-Marseille University, UMR CNRS 7334
, Campus Saint Jérôme, France
Search for other works by this author on:
Jean Noirot
;
Jean Noirot
(Investigation, Methodology, Writing – review & editing)
1
CEA, DES, IRESNE, DEC, Cadarache
, F-13108 Saint-Paul-Lez-Durance, France
Search for other works by this author on:
Thierry Blay;
Thierry Blay
(Investigation)
1
CEA, DES, IRESNE, DEC, Cadarache
, F-13108 Saint-Paul-Lez-Durance, France
Search for other works by this author on:
Martiane Cabié
;
Martiane Cabié
(Supervision, Writing – review & editing)
3
CNRS, FSCM, CP2M, Aix Marseille University
, Campus Saint Jérôme, France
Search for other works by this author on:
Myriam Dumont
Myriam Dumont
(Supervision, Writing – review & editing)
4
Arts et Métiers Institute of Technology, MSMP, HESAM Université
, F-59000 Lille, France
Search for other works by this author on:
a)Author to whom correspondence should be addressed: isabelle.aubrun@cea.fr
Note: This paper is part of the Special Topic on Radiation Effects in Materials.
J. Appl. Phys. 132, 195903 (2022)
Article history
Received:
June 21 2022
Accepted:
October 23 2022
Citation
Isabelle Zacharie-Aubrun, Rebecca Dowek, Jean Noirot, Thierry Blay, Martiane Cabié, Myriam Dumont; Restructuring in high burn-up UO2 fuels: Experimental characterization by electron backscattered diffraction. J. Appl. Phys. 21 November 2022; 132 (19): 195903. https://doi.org/10.1063/5.0104865
Download citation file:
Sign in
Don't already have an account? Register
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Sign in via your Institution
Sign in via your InstitutionPay-Per-View Access
$40.00