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Synchrotron radiation investigations of microstructural evolutions of ODS steels and Zr-based alloys irradiated in nuclear reactors

Published online by Cambridge University Press:  08 April 2015

Denis Menut*
Affiliation:
CEA, DEN, Service de Recherches Métallurgiques Appliquées, 91191 Gif-sur-Yvette, France
Jean-Luc Béchade
Affiliation:
CEA, DEN, Service de Recherches Métallurgiques Appliquées, 91191 Gif-sur-Yvette, France
Sebastiano Cammelli
Affiliation:
Synchrotron SOLEIL, Division Expériences, Ligne MARS, L'Orme des Merisiers, Saint Aubin BP48, 91192 Gif-sur-Yvette Cedex, France
Sandrine Schlutig
Affiliation:
Synchrotron SOLEIL, Division Expériences, Ligne MARS, L'Orme des Merisiers, Saint Aubin BP48, 91192 Gif-sur-Yvette Cedex, France
Bruno Sitaud
Affiliation:
Synchrotron SOLEIL, Division Expériences, Ligne MARS, L'Orme des Merisiers, Saint Aubin BP48, 91192 Gif-sur-Yvette Cedex, France
Pier Lorenzo Solari
Affiliation:
Synchrotron SOLEIL, Division Expériences, Ligne MARS, L'Orme des Merisiers, Saint Aubin BP48, 91192 Gif-sur-Yvette Cedex, France
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Synchrotron-based x-ray techniques are used to bring complementary information to local probes such as atom probe tomography and transmission electron microscopy. Two examples of nuclear materials used for the cladding of fuel assembly are given: oxide dispersion strengthened (ODS) alloys and M5™ Zr-based alloys. In both cases, synchrotron radiation analyses bring original results concerning nanosized secondary phases: for M5™, radiation-enhanced precipitation of β-Nb precipitates has been evidence and the crystallographic structure (lattice parameter and Nb content) is reported for the first time and for irradiated ODS, the dissolution of larger oxides is evidenced while a finer distribution of complex Y–Ti–O oxides still acts as obstacles for dislocations.

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Articles
Copyright
Copyright © Materials Research Society 2015 

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Footnotes

Contributing Editor: Djamel Kaoumi

References

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