S. Aas, Mechanical interaction between fuel and cladding, Nucl. Eng. Des, vol.21, pp.237-253, 1972.

B. Michel, J. Sercombe, C. Nonon, and O. Fandeur, Modeling of pellet-cladding interaction, Compr. Nucl. Mater, vol.3, pp.677-712, 2012.

M. S. Seltzer, J. S. Perrin, A. H. Clauer, and B. A. Wilcox, Creep behavior of ceramic nuclear, React. Technol, vol.14, pp.99-135, 1971.

B. Burton, G. L. Reynolds, and J. P. Barnes, The influence of grain size on the creep of uranium dioxide, J. Mater. Sci, vol.8, pp.1690-1694, 1973.

C. S. Yust and J. T. Roberts, On the observation of lattice and grain boundary dislocations in UO 2 deformed at high temperature, J. Nucl. Mater, vol.48, pp.317-329, 1973.

Y. Gu-erin, Etude par compression a hautes temp eratures de la d eformation plastique du bioxyde d'uranium polycristallin, J. Nucl. Mater, vol.56, pp.61-75, 1975.

D. B. Knorr, R. M. Canon, and R. L. Coble, An analysis of diffusion and diffusional creep in stoichiometric and hyper-stoichiometric uranium dioxide, Acta Metall, vol.37, pp.2103-2123, 1989.

F. Dherbey, F. Louchet, A. Mocellin, and S. Leclercq, Elevated temperature creep of polycrystalline uranium dioxide: from microscopic mechanisms to macroscopic behaviour, Acta Mater, vol.50, pp.1495-1505, 2002.

J. C. Gao, L. F. Wang, and S. F. Wu, High-temperature creep properties of uranium dioxide pellet, T. NonFerr. Metals Soc, vol.20, pp.238-242, 2010.

C. S. Yust and C. J. Mchargue, Dislocation substructures in deformed uranium dioxide single crystals, J. Nucl. Mater, vol.31, pp.121-137, 1969.

A. Alamo, J. M. Lefebvre, and J. Soullard, D eformation plastique du bioxyde d'uranium: observation des sous-structures de dislocations, J. Nucl. Mater, vol.75, pp.145-153, 1978.

X. Iltis, N. Gey, C. Cagna, and A. Hazotte, Ph Sornay, Microstructural evolution of uranium dioxide following compression creep tests: an EBSD and image analysis study, J. Nucl. Mater, vol.456, pp.426-435, 2015.

X. Iltis, M. Ben, H. Saada, N. Mansour, A. Gey et al., A new characterization approach for studying relationships between microstructure and creep damage mechanisms of uranium dioxide, J. Nucl. Mater, vol.474, pp.1-7, 2016.
URL : https://hal.archives-ouvertes.fr/cea-02382809

M. Ben-saada, N. Gey, B. Beausir, X. Iltis, H. Mansour et al., Subboundaries induced by dislocational creep in uranium dioxide analyzed by advanced diffraction and channeling electron microscopy, Mater. Char, vol.133, pp.112-121, 2017.

J. Robert-amodeo, A review of experimental observations and theoretical models of dislocations cells and subgrains, Res. Mech, vol.23, pp.137-160, 1988.

J. P. Poirier, Creep of Crystals : High-Temperature Deformation Processes in Metals, Ceramics and Minerals, 1985.

E. Mariani, J. Mecklenburgh, J. Wheeler, D. J. Prior, and F. Heidelbach, Microstructure evolution and recrystallization during creep of MgO single crystals, Acta Mater, vol.57, pp.1886-1898, 2009.

M. R. Drury and J. L. Urai, Deformation-related recrystallization processes, Tectonophysics, vol.172, pp.235-253, 1990.

M. Stipp, H. Stünitz, R. Heilbronner, and S. M. Schmid, The eastern Tonale fault zone: a 'natural laboratory' for crystal plastic deformation of quartz over a temperature range from 250 to 700 C, J. Struct. Geol, vol.24, pp.1861-1884, 2002.

M. and B. Saada, Etude du comportement visco-plastique du dioxyde d'uranium : Quantification par analyse EBSD et ECCI des effets li es aux conditions de sollicitation et a la microstructure initiale, 2017.

K. Thomsen and N. H. Schmidt, Improving the accuracy of orientation measurements using EBSD, Microsc. Microanal, vol.19, issue.2, pp.724-725, 2013.

H. Mansour, M. A. Crimp, N. Gey, and N. Maloufi, Accurate electron channeling contrast analysis of a low angle sub-grain boundary, Scripta Mater, vol.109, pp.76-79, 2015.
URL : https://hal.archives-ouvertes.fr/hal-01513866

H. Mansour, M. A. Crimp, N. Gey, X. Iltis, and N. Maloufi, Dislocation Analysis of a Complex Sub-grain Boundary Using Accurate Electron Channelling Contrast Imaging in a Scanning Electron Microscope

L. Germain, D. Kratsch, M. Salib, and N. Gey, Identification of sub-grains and low angle boundaries beyond the angular resolution of EBSD maps, Mater. Char, vol.98, pp.66-72, 2014.
URL : https://hal.archives-ouvertes.fr/hal-01503888

B. Beausir and J. Fundenberger, Universit e de Lorraine -metz, ATEX© -analysis tools for electron and X-ray diffraction, 2015.

H. Mansour, J. Guyon, M. A. Crimp, N. Gey, B. Beausir et al., Accurate electron contrast analysis of dislocations in fine grained bulk materials, Scripta Mater, vol.84, issue.85, pp.11-14, 2014.
URL : https://hal.archives-ouvertes.fr/hal-01503460

J. Guyon, H. Mansour, N. Gey, M. A. Crimp, S. Chalal et al., Sub-micron resolution selected area electron channeling patterns, Ultramicroscopy, vol.149, pp.34-44, 2015.
URL : https://hal.archives-ouvertes.fr/hal-01514962

L. Portelette, B. Michel, M. Ibrahim, E. Castelier, M. Ben et al., Numerical Simulation of the UO2 Viscoplasticity at the Polycristal Scale : Microscopic Validation, vol.16, 2018.

P. Garcia, A. Miard, J. B. Parise, M. Ben, X. Saada et al., High temperature creep of uranium dioxide: on the influence of equilibrium oxygen partial pressure, MRS Spring Meet, 2006.
URL : https://hal.archives-ouvertes.fr/cea-02338950

S. Demouchy, A. Mussi, F. Barou, A. Tommasi, and P. Cordier, Viscoplasticity of polycrystalline olivine experimentally deformed at high pressure and 900 C, Tectonophysics, vol.623, pp.123-135, 2014.
URL : https://hal.archives-ouvertes.fr/hal-01053513

G. M. Pennock and M. R. Drury, Low angle subgrain misorientations in deformed NaCl, J. Microsc, vol.217, pp.130-137, 2005.

G. M. Pennock, M. R. Drury, and C. J. Spiers, The development of subgrain misorientations with strain in dry synthetic NaCl measured using EBSD, J. Struct. Geol, vol.27, pp.2159-2170, 2005.

M. P. Staiger, I. Kolbeinsson, J. Newman, T. Woodfield, and T. Sato, Orientation imaging microscopy of polycrystalline sodium chloride, Mater. Char, vol.61, pp.413-419, 2010.

S. L. Valcke, G. M. Pennock, M. R. Drury, and J. H. De-bresser, Electron backscattered diffraction as a tool to quantify subgrains in deformed calcite, J. Microsc, vol.224, pp.264-276, 2006.