Coarsening Kinetics of Y2O3 Dispersoid in New Grade of Fe-Al-Cr-Based ODS Alloy

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dc.contributor.authorHolzer, Jakubcs
dc.contributor.authorGamanov, Štěpáncs
dc.contributor.authorLuptáková, Natáliacs
dc.contributor.authorDlouhý, Antoníncs
dc.contributor.authorSvoboda, Jiřícs
dc.coverage.issue2cs
dc.coverage.volume12cs
dc.date.accessioned2023-02-18T00:57:50Z
dc.date.available2023-02-18T00:57:50Z
dc.date.issued2022-01-23cs
dc.description.abstractOxide dispersion strengthened (ODS) alloys with a high content of Al are candidate materials for extreme high temperature applications such as turbine blades and other components working at temperatures significantly above 1000 degrees C. While oxidation kinetics of Fe-Al ODS steels is frequently studied, the stability and growth kinetics of strengthening oxide dispersion is a rarely studied topic. The Fe-10Al-4Cr-4Y(2)O(3) is an experimental material, fabricated at IPM by powder metallurgy route and contains much higher volume fraction of Y2O3 than similar materials. Stability and growth kinetics of Y2O3 particles of our material are studied on 24 samples aged for 0.5, 1, 2, 4, 8, 16, 32 and 72 h at 1200 degrees C, 1300 degrees C and 1400 degrees C. The sizes of at least 600 individual Y2O3 particles are measured on each sample to obtain extensive statistical analysis of the particle growth. The average particle size coarsens from 28.6 +/- 0.7 nm to 36.9 +/- 0.9 nm in 1200 degrees C series and to 81.4 +/- 5.6 nm in 1400 degrees C series. The evaluated activation energy of coarsening of Y2O3 particles is 274 +/- 65 kJ. The effects of particle coarsening on mechanical properties is demonstrated by HV measurements, which is in very good agreement with the Orowan theory.en
dc.formattextcs
dc.format.extent1-11cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationMetals. 2022, vol. 12, issue 2, p. 1-11.en
dc.identifier.doi10.3390/met12020210cs
dc.identifier.issn2075-4701cs
dc.identifier.other180089cs
dc.identifier.urihttp://hdl.handle.net/11012/208762
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofMetalscs
dc.relation.urihttps://www.mdpi.com/2075-4701/12/2/210cs
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.subjectoxide dispersion strengthened (ODS) alloyen
dc.subjectdispersoid coarseningen
dc.subjectparticle size stabilityen
dc.subjectmicrostructureen
dc.titleCoarsening Kinetics of Y2O3 Dispersoid in New Grade of Fe-Al-Cr-Based ODS Alloyen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-180089en
sync.item.dbtypeVAVen
sync.item.insts2023.02.18 01:57:49en
sync.item.modts2023.02.18 00:20:33en
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Pokročilá multifunkční keramikacs
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