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dc.contributor.authorDurand, Malik
dc.contributor.authorCormier, Jonathan
dc.contributor.authorPaumier, Fabien
dc.contributor.authorKatnagallu, Shyam
dc.contributor.authorSaksena, Aparna
dc.contributor.authorKontis, Paraskevas
dc.contributor.authorPettinari-Sturmel, Florence
dc.contributor.authorHantcherli, Muriel
dc.contributor.authorFranchet, Jean-Michel
dc.contributor.authorDumont, Christian
dc.contributor.authorBozzolo, Nathalie
dc.date.accessioned2023-02-20T14:41:23Z
dc.date.available2023-02-20T14:41:23Z
dc.date.created2022-07-30T11:08:51Z
dc.date.issued2022
dc.identifier.issn1359-6454
dc.identifier.urihttps://hdl.handle.net/11250/3052456
dc.description.abstractThe present study aims to understand the underlying mechanisms of macroscopic contraction that occurs in γ/γ′ nickel based superalloys submitted to isothermal annealing and resulting in stress relaxation retardation. Samples of the AD730TM alloy were characterized at different scales using dilatometry, X-Ray Diffraction (XRD) with in-situ heating, Electron Channeling Contrast Imaging (ECCI) in the Scanning Electron Microscope (SEM), conventional Transmission Electron Microscopy (TEM) and Atom Probe Tomography (APT). APT analyses revealed chemical composition changes in both the γ matrix and the γ′ hardening precipitates during annealing at 760°C after sub-solvus solution heat treatment. These chemical alterations lead to a decrease of the lattice parameters of both phases, which was captured by XRD analyses. The macroscopic volume contraction is shown to be mainly governed by that decrease in the lattice parameters. In addition, from APT analyses, the chemical alterations seem to be promoted by diffusion of solutes such as Cr, Co and Fe, along dislocations occurring under relaxation testing conditions.en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.titleChemical redistribution and change in crystal lattice parameters during stress relaxation annealing of the AD730 TM superalloyen_US
dc.title.alternativeChemical redistribution and change in crystal lattice parameters during stress relaxation annealing of the AD730<sup>TM</sup> superalloyen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.subject.nsiVDP::Materialteknologi: 520en_US
dc.subject.nsiVDP::Materials science and engineering: 520en_US
dc.source.volume237en_US
dc.source.journalActa Materialiaen_US
dc.identifier.doi10.1016/j.actamat.2022.118141
dc.identifier.cristin2040118
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2


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