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dc.date.accessioned2019-03-05T17:30:14Z
dc.date.available2019-03-05T17:30:14Z
dc.date.created2019-01-10T14:53:00Z
dc.date.issued2018
dc.identifier.citationPedrazzini, S Child, DJ Aarholt, Thomas Ball, C Dowd, M Girling, A Cockings, H Perkins, K Hardy, MC Stone, HJ Bagot, PAJ . On the Effect of Environmental Exposure on Dwell Fatigue Performance of a Fine-Grained Nickel-Based Superalloy. Metallurgical and Materials Transactions. A. 2018, 49(9), 3908-3922
dc.identifier.urihttp://hdl.handle.net/10852/67072
dc.description.abstractThe influence of sulfur contamination on the corrosion-fatigue behavior of a polycrystalline superalloy used in aero-engines is considered. Samples tested under a variety of environmental conditions (including exposures to air, SOx gas, and salt) are characterized through a suite of high-resolution characterization methods, including transmission electron microscopy (TEM), secondary ion mass spectroscopy (nanoSIMS), and atom probe tomography (APT). The primary effect of sulfur contamination is to accelerate the crack growth rate by altering the failure mechanism. The SIMS and TEM analyses indicate Cr-Ti sulfide particle formation at grain boundaries ahead of and around oxidized cracks. The APT analysis suggests that these particles then oxidize as the crack propagates and are enveloped in chromia. The chromia is surrounded by a continuous layer of alumina within the cracks. All of the sulfur detected was confined within the particles, with no elemental segregation found at grain boundaries.en_US
dc.languageEN
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleOn the Effect of Environmental Exposure on Dwell Fatigue Performance of a Fine-Grained Nickel-Based Superalloyen_US
dc.typeJournal articleen_US
dc.creator.authorPedrazzini, S
dc.creator.authorChild, DJ
dc.creator.authorAarholt, Thomas
dc.creator.authorBall, C
dc.creator.authorDowd, M
dc.creator.authorGirling, A
dc.creator.authorCockings, H
dc.creator.authorPerkins, K
dc.creator.authorHardy, MC
dc.creator.authorStone, HJ
dc.creator.authorBagot, PAJ
cristin.unitcode185,15,4,0
cristin.unitnameFysisk institutt
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2
dc.identifier.cristin1654298
dc.identifier.bibliographiccitationinfo:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Metallurgical and Materials Transactions. A&rft.volume=49&rft.spage=3908&rft.date=2018
dc.identifier.jtitleMetallurgical and Materials Transactions. A
dc.identifier.volume49
dc.identifier.issue9
dc.identifier.startpage3908
dc.identifier.endpage3922
dc.identifier.doihttp://dx.doi.org/10.1007/s11661-018-4752-7
dc.identifier.urnURN:NBN:no-70222
dc.type.documentTidsskriftartikkelen_US
dc.type.peerreviewedPeer reviewed
dc.source.issn1073-5623
dc.identifier.fulltextFulltext https://www.duo.uio.no/bitstream/handle/10852/67072/2/Pedrazzini2018_Article_OnTheEffectOfEnvironmentalExpo.pdf
dc.type.versionPublishedVersion


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