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dc.contributor.authorBLACKMUR, Matthew S
dc.contributor.authorROBSON, J.D
dc.contributor.authorPREUSS, M
dc.contributor.author
 hal.structure.identifier
ZANELLATO, Olivier
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
dc.contributor.authorCERNIK, R.J.
dc.contributor.author
 hal.structure.identifier
SHI, S.-Q.
61400 The Hong Kong Polytechnic University [Hong Kong] [POLYU]
dc.contributor.authorRIBEIRO, Fabienne
dc.contributor.authorANDRIEUX, Jérôme
dc.date.accessioned2015
dc.date.available2017
dc.date.issued2015
dc.date.submitted2015
dc.identifier.issn0022-3115
dc.identifier.urihttp://hdl.handle.net/10985/10114
dc.description.abstractHigh-energy synchrotron X-ray diffraction was used to investigate the isothermal precipitation of δ-hydride platelets in Zircaloy-4 at a range of temperatures relevant to reactor conditions, during both normal operation and thermal transients. From an examination of the rate kinetics of the precipitation process, precipitation slows with increasing temperature above 200 °C, due to a reduction in the thermodynamic driving force. A model for nucleation rate as a function of temperature was developed, to interpret the precipitation rates seen experimentally. While the strain energy associated with the misfit between hydrides and the matrix makes a significant contribution to the energy barrier for nucleation, a larger contribution arises from the interfacial energy. Diffusion distance calculations show that hydrogen is highly mobile in the considered thermal range and on the scale of inter-hydride spacing and it is not expected to be significantly rate limiting on the precipitation process that takes place under reactor operating conditions.
dc.language.isoen
dc.publisherElsevier
dc.rightsPost-print
dc.titleZirconium hydride precipitation kinetics in Zircaloy-4 observed with synchrotron X-ray diffraction
ensam.embargo.terms2 Years
dc.identifier.doi10.1016/j.jnucmat.2015.04.025
dc.typdocArticle dans une revue avec comité de lecture
dc.localisationCentre de Paris
dc.subject.halSciences de l'ingénieur: Matériaux
dc.subject.halSciences de l'ingénieur: Mécanique
ensam.audienceInternationale
ensam.page160-169
ensam.journalJournal of Nuclear Materials
ensam.volume464
hal.description.error{"meta":{"peerReviewing":{"isEmpty":"Vous devez remplir ce champ"}},"author":["Missing affiliation for all authors"]}
hal.statusunsent
dc.identifier.eissn0022-3115


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