Fracture Resistance of 14Cr ODS Steel Exposed to a High Temperature Gas

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dc.contributor.authorHojná, Annacs
dc.contributor.authorMichalička, Jancs
dc.contributor.authorHadraba, Hynekcs
dc.contributor.authorDi Gabriele, Foscacs
dc.contributor.authorDuchoň, Jancs
dc.contributor.authorRozumová, Luciacs
dc.contributor.authorHusák, Romancs
dc.coverage.issue12cs
dc.coverage.volume7cs
dc.date.accessioned2020-08-04T11:04:39Z
dc.date.available2020-08-04T11:04:39Z
dc.date.issued2017-12-01cs
dc.description.abstractThis paper studies the impact fracture behavior of the 14%Cr Oxide Dispersion Strengthened (ODS) steel (ODM401) after high temperature exposures in helium and air in comparison to the as-received state. A steel bar was produced by mechanical alloying and hot-extrusion at 1150 °C. Further, it was cut into small specimens, which were consequently exposed to air or 99.9% helium in a furnace at 720 °C for 500 h. Impact energy transition curves are shifted towards higher temperatures after the gas exposures. The transition temperatures of the exposed states significantly increase in comparison to the as-received steel by about 40 °C in He and 60 °C in the air. Differences are discussed in terms of microstructure, surface and subsurface Scanning Electron Microscope (SEM) and Transmission Electron Microscope (TEM) observations. The embrittlement was explained as temperature and environmental effects resulting in a decrease of dislocation level, slight change of the particle composition and interface/grain boundary segregations, which consequently affected the nucleation of voids leading to the ductile fracture.en
dc.formattextcs
dc.format.extent560-1-560-17cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationMetals. 2017, vol. 7, issue 12, p. 560-1-560-17.en
dc.identifier.doi10.3390/met7120560cs
dc.identifier.issn2075-4701cs
dc.identifier.other146380cs
dc.identifier.urihttp://hdl.handle.net/11012/137284
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofMetalscs
dc.relation.urihttps://www.mdpi.com/2075-4701/7/12/560cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2075-4701/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectnanostructured steelen
dc.subjectthermal agingen
dc.subjectimpact fractureen
dc.subjectmicroanalysisen
dc.subjectoxidationen
dc.titleFracture Resistance of 14Cr ODS Steel Exposed to a High Temperature Gasen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-146380en
sync.item.dbtypeVAVen
sync.item.insts2020.08.04 13:04:39en
sync.item.modts2020.08.04 12:45:43en
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Sdílená laboratoř RP1cs
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Středoevropský technologický institutcs
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Sdílená laboratoř RP1
Středoevropský technologický institut