Journal Published Online: 29 July 2010
Volume 7, Issue 8

REFLET Experiment in OSIRIS: Relaxation under Flux as a Method for Determining Creep Behavior of Zircaloy Assembly Components

CODEN: JAIOAD

Abstract

A stress relaxation on bent-beam specimen irradiation campaign was performed in the French material testing reactor OSIRIS in order to screen different materials according to their in-flux behavior and to derive constitutive laws that are used to describe the in-reactor behavior of assembly components under axial stress. This paper presents the methodology used, with particular emphasis on the validation of the different hypotheses. The methodology is illustrated with the results obtained on an industrial Zircaloy-4 (Zy-4) alloy used in guide thimbles. As an illustration of the capability of the method, the parameters of simple creep behavior laws are adjusted to the relaxation results. The creep-law predictions are compared to results obtained previously in a creep experiment.

Author Information

Carassou, S.
Nuclear Energy Division, CEA Saclay, Gif-sur-Yvette, France
Duguay, C.
Nuclear Energy Division, CEA Cadarache, Saint Paul Lez Durance Cedex, France
Yvon, P.
Nuclear Energy Division, CEA Saclay, Gif-sur-Yvette, France
Rozenblum, F.
Nuclear Energy Division, CEA Saclay, Gif-sur-Yvette, France
Cloué, J.
AREVA, AREVA NP SAS, Lyon Cedex 6, France
Chabretou, V.
AREVA, AREVA NP SAS, Lyon Cedex 6, France
Bernaudat, C.
SEPTEN, EDF, Villeurbanne Cedex, France
Levasseur, B.
SEPTEN, EDF, Villeurbanne Cedex, France
Maurice, A.
SEPTEN, EDF, Villeurbanne Cedex, France
Bouffioux, P.
DRD/MMC, EDF, Moret sur Loing Cedex, Site des Renardières, France
Audic, K.
DRD/MMC, EDF, Moret sur Loing Cedex, Site des Renardières, France
Pages: 22
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Stock #: JAI103065
ISSN: 1546-962X
DOI: 10.1520/JAI103065