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Very high cycle fatigue of a high strength steel under sea water corrosion: A strong corrosion and mechanical damage coupling

hal.structure.identifierLaboratoire Energétique Mécanique Electromagnétisme [LEME]
hal.structure.identifierUniversité Paris Nanterre [UPN]
dc.contributor.authorPEREZ-MORA, Ruben
hal.structure.identifierInstitut de Mécanique et d'Ingénierie de Bordeaux [I2M]
dc.contributor.authorPALIN LUC, Thierry
IDREF: 136498752
hal.structure.identifierUniversité Paris Nanterre [UPN]
hal.structure.identifierLaboratoire Energétique Mécanique Electromagnétisme [LEME]
dc.contributor.authorBATHIAS, Claude
hal.structure.identifierSaint Louis University [SLU]
dc.contributor.authorPARIS, Paul C.
dc.date.accessioned2021-05-14T09:58:00Z
dc.date.available2021-05-14T09:58:00Z
dc.date.issued2015-05
dc.identifier.issn0142-1123
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/77918
dc.description.abstractEnThis paper is focused on the effect of sea water corrosion on the gigacycle fatigue strength of a martensitic–bainitic hot rolled steel R5 used for manufacturing off-shore mooring chains for petroleum platforms in the North Sea. Crack initiation fatigue tests in the regime of 106 to 1010 cycles were carried out on smooth specimens under three different environment conditions: (i) without any corrosion (virgin state) in air, (ii) in air after pre-corrosion, and (iii) in-situ corrosion-fatigue under artificial sea water flow. A drastic effect of sea water corrosion was found: the median fatigue strength beyond 108 cycles is divided by 5 compared to virgin state specimens. The crack initiation sites were corrosion pits caused by pre-corrosion or created during corrosion-fatigue under sea water flow. Furthermore some sub-surface and internal crack initiations were observed on specimens without any corrosion (virgin state). Crack propagation curves were obtained in mode I in air and under sea water flow. Calculation of the stress intensity factor at the tip of cracks emanating from hemispherical surface pits combined with the Paris–Hertzberg–Mc Clintock crack growth rate model showed that fatigue crack initiation period represents most of the fatigue life in the VHCF regime. Additional original experiments have shown physical evidences that the fatigue strength in the gigacycle regime under sea water flow is mainly governed by the corrosion process with a strong coupling between cyclic loading and corrosion.
dc.language.isoen
dc.publisherElsevier
dc.subject.enCrack initiation
dc.subject.enCrack growth
dc.subject.enGigacycle fatigue
dc.subject.enCorrosion
dc.subject.enSteel
dc.title.enVery high cycle fatigue of a high strength steel under sea water corrosion: A strong corrosion and mechanical damage coupling
dc.typeArticle de revue
dc.identifier.doi10.1016/j.ijfatigue.2015.01.004
dc.subject.halSciences de l'ingénieur [physics]/Mécanique [physics.med-ph]
dc.subject.halSciences de l'ingénieur [physics]/Mécanique [physics.med-ph]/Mécanique des matériaux [physics.class-ph]
bordeaux.journalInternational Journal of Fatigue
bordeaux.page156–165
bordeaux.volume74
bordeaux.hal.laboratoriesInstitut de Mécanique et d’Ingénierie de Bordeaux (I2M) - UMR 5295*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.institutionINRAE
bordeaux.institutionArts et Métiers
bordeaux.peerReviewedoui
hal.identifierhal-01110745
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01110745v1
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