High-Temperature Low-Cycle Fatigue Behaviour of MAR-M247 Coated with Newly Developed Thermal and Environmental Barrier Coating

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dc.contributor.authorŠulák, Ivocs
dc.contributor.authorObrtlík, Karelcs
dc.contributor.authorČelko, Ladislavcs
dc.contributor.authorGejdoš, Pavelcs
dc.contributor.authorJech, Davidcs
dc.coverage.issue1cs
dc.coverage.volume2018cs
dc.date.accessioned2020-08-04T11:03:35Z
dc.date.available2020-08-04T11:03:35Z
dc.date.issued2018-12-24cs
dc.description.abstractThis study investigates the strain-controlled low-cycle fatigue (LCF) behaviour of an untreated and surface-treated MAR-M247 superalloy in a symmetrical push-pull cycle with a constant strain rate at 900°C in laboratory air. A newly developed experimental thermal and environmental barrier coating (TEBC) system, consisting of a 170 m thick CoNiCrAlY bond coat (BC) and a bilayer ceramic top coat (TC), with an interlayer and an upper layer, was deposited using air plasma spray techniques. The ceramic interlayer with an average thickness of 77 m was formed from agglomerated and sintered yttria-stabilized zirconia. An experimental mixture of mullite (Al6Si2O13) and hexacelsian (BaAl2Si2O8) at a ratio of 70/30 vol.% was sprayed as the upper layer. The average thickness of the TC was 244 m. The specimen sections were investigated using a TESCAN Lyra3 XMU scanning electron microscope (SEM) to characterise the microstructure of both the TEBC and the substrate material. The fatigue damage mechanisms in the TEBC-coated superalloy were studied. The fatigue life curves in the representation of the total strain amplitude versus the number of cycles to failure of the TEBC-coated and uncoated superalloy were assessed. TEBC was found to have a slight, positive effect on the fatigue life of MAR-M247.en
dc.formattextcs
dc.format.extent1-8cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationAdvances in Materials Science and Engineering. 2018, vol. 2018, issue 1, p. 1-8.en
dc.identifier.doi10.1155/2018/9014975cs
dc.identifier.issn1687-8434cs
dc.identifier.other160716cs
dc.identifier.urihttp://hdl.handle.net/11012/193258
dc.language.isoencs
dc.publisherHindawics
dc.relation.ispartofAdvances in Materials Science and Engineeringcs
dc.relation.urihttps://www.hindawi.com/journals/amse/2018/9014975/cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1687-8434/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectMAR-M247en
dc.subjectthermal barrier coatingen
dc.subjecthigh-temperature low cycle fatigueen
dc.subjectcyclic stress-strain curveen
dc.subjectfatigue life curvesen
dc.subjectdegradation mechanismsen
dc.titleHigh-Temperature Low-Cycle Fatigue Behaviour of MAR-M247 Coated with Newly Developed Thermal and Environmental Barrier Coatingen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-160716en
sync.item.dbtypeVAVen
sync.item.insts2020.08.04 13:03:35en
sync.item.modts2020.08.04 12:45:49en
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Charakterizace materiálů a pokročilé povlaky 1-06cs
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