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Elastic strains in polycrystalline UO2 samples implanted with He: micro Laue diffraction measurements and elastic modeling

Published online by Cambridge University Press:  22 March 2013

Axel Richard ,
Etienne Castelier ,
Herve Palancher ,
Jean-Sebastien Micha  and
Philippe Goudeau
Axel Richard
Affiliation:
CEA, DEN, DEC/SESC, Centre de Cadarache, 13 108 St Paul lez Durance, France
Etienne Castelier
Affiliation:
CEA, DEN, DEC/SESC, Centre de Cadarache, 13 108 St Paul lez Durance, France
Herve Palancher
Affiliation:
CEA, DEN, DEC/SESC, Centre de Cadarache, 13 108 St Paul lez Durance, France
Jean-Sebastien Micha
Affiliation:
CEA, INAC, 38 054 Grenoble Cedex 9, France
Philippe Goudeau
Affiliation:
Institut Pprime, CNRS-Universite de Poitiers-ENSMA, BP 30179 - 86 962 Futuroscope, France
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Abstract:

In the framework of the study of long-term storage of the spent nuclear fuel, polycrystalline UO2 samples have been implanted with He ions. The thin implanted layer, close to the free surface is subjected to elastic stresses which are studied by x-ray diffraction (micro Laue diffraction) and a mechanical modeling. A simple expression of the displacement gradient tensor has been evidenced; it concerns only three terms (ε3, ε4 and ε5) which strongly evolve with considered grain orientations. Finally, we show that results obtained with micro diffraction are in very good agreement with conventional x-ray diffraction measurements done in laboratory at macro scale.

Keywords

ion-implantationx-ray diffraction (XRD)stress/strain relationship
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1514: Symposium HH – Advances in Materials for Nuclear Energy , 2013 , pp. 125 - 130
Copyright
Copyright © Materials Research Society 2013 

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References

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