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dc.contributor.author
 hal.structure.identifier
ZHAO, Y
93484 Université de Technologie de Troyes [UTT]
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LE JONCOUR, L
93484 Université de Technologie de Troyes [UTT]
dc.contributor.authorBACZMAŃSKI, A.
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GADALIŃSKA, E
232948 Institute of Aviation [Warsaw]
dc.contributor.authorWROŃSKI, S
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PANICAUD, B
116261 Institut Charles Delaunay [ICD]
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FRANÇOIS, M
116261 Institut Charles Delaunay [ICD]
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BRAHAM, C
86289 Procédés et Ingénierie en Mécanique et Matériaux [Paris] [PIMM]
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BUSLAPS, T
2568 European Synchrotron Radiation Facility [ESRF]
dc.date.accessioned2017
dc.date.available2017
dc.date.issued2017
dc.date.submitted2017
dc.identifier.urihttp://hdl.handle.net/10985/11660
dc.description.abstractThe goal of this work was the determination of lattice strains distribution in two phases of duplex steel during plastic necking. Subsequently, the stress heterogeneity in the neck was studied in order to determine the reason for the damage initiation and to verify the hypothesis that the damage begins in the ferritic phase. To do this, X-ray synchrotron radiation was used to scan the ‘in situ’ variation of the interplanar spacings along the necking zone for samples subjected to tensile loading. A self-consistent model and FEM simulation were applied for the experimental data interpretation. It was found that for advanced necking the phase lattice strains, especially those measured at some distance from the neck centre, show a large inversion of the loads localised in both phases compared to the undamaged state (the lattice strains in the ferrite become smaller than in the austenite). This effect indicates stress relaxation in the ferrite which is connected with the damage phenomenon. Correlation of the experimental results with the modelling shows that the value of von Mises stress is responsible for the initiation of the ferritic phase softening.
dc.language.isoen
dc.publisherElsevier
dc.rightsPost-print
dc.subjectElastoplastic deformation
dc.subjectNecking
dc.subjectDamage
dc.subjectPolycrystalline material
dc.subjectSelf-consistent model
dc.subjectSynchrotron diffraction
dc.titleStress distribution correlated with damage in duplex stainless steel studied by synchrotron diffraction during plastic necking
ensam.embargo.terms2017-07-01
dc.identifier.doi10.1016/j.matdes.2016.10.014
dc.typdocArticles dans des revues 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.page157–168
ensam.journalMaterials & Design
ensam.volume113
ensam.peerReviewingOui
hal.identifierhal-01494328
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