Mechanical Behavior of Oxide Dispersion Strengthened Steel Directly Consolidated by Rotary Swaging

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dc.contributor.authorKocich, Radimcs
dc.contributor.authorKunčická, Lenkacs
dc.contributor.authorDvořák, Karelcs
dc.contributor.authorKrál, Petrcs
dc.coverage.issue19cs
dc.coverage.volume17cs
dc.date.accessioned2025-04-04T11:56:43Z
dc.date.available2025-04-04T11:56:43Z
dc.date.issued2024-10-23cs
dc.description.abstractAmong the main benefits of powder-based materials is the possibility of combining different constituents to achieve enhanced properties of the fabricated bulk material. The presented study characterizes the micro- and sub-structures and related mechanical properties of ferritic steel strengthened with a fine dispersion of nano-sized Y2O3 oxide particles. Unlike the typical method of preparation via rolling, the material presented herein was fabricated by direct consolidation from a mixture of powders using the versatile method of hot rotary swaging. The mechanical properties were evaluated at room temperature and also at 1300 degrees C to document the suitability of the prepared steel for high-temperature applications. The results showed that the imposed shear strain, i.e., swaging ratio, is a crucial parameter influencing the microstructure and, thus, material behavior. The workpiece subjected to the swaging ratio of 1.4 already exhibited a sufficiently consolidated structure with ultra-fine grains and featured high room-temperature microhardness values (up to 690 HV0.5), as well as a relatively high maximum flow stress (similar to 88 MPa) when deformed at the temperature of 1300 degrees C with the strain rate of 0.5 s(-1). However, the dispersion of oxides within this sample exhibited local inhomogeneities. Increasing the swaging ratio to 2.5 substantially contributed to the homogenization of the distribution of the Y2O3 oxide particles, which resulted in increased homogeneity of mechanical properties (lower deviations from the average values), but their lower absolute values due to the occurrence of nucleating nano-sized recrystallized grains.en
dc.formattextcs
dc.format.extent1-14cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationMaterials . 2024, vol. 17, issue 19, p. 1-14.en
dc.identifier.doi10.3390/ma17194831cs
dc.identifier.issn1996-1944cs
dc.identifier.orcid0000-0002-4054-7049cs
dc.identifier.orcid0000-0003-2111-3357cs
dc.identifier.other193406cs
dc.identifier.researcheridF-9223-2019cs
dc.identifier.researcheridC-6217-2019cs
dc.identifier.researcheridK-2385-2014cs
dc.identifier.scopus54992801300cs
dc.identifier.urihttps://hdl.handle.net/11012/250775
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofMaterialscs
dc.relation.urihttps://www.mdpi.com/1996-1944/17/19/4831cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1996-1944/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectrotary swagingen
dc.subjectdirect consolidationen
dc.subjectoxide dispersion strengtheningen
dc.subjectmicrostructureen
dc.subjectmicrohardnessen
dc.titleMechanical Behavior of Oxide Dispersion Strengthened Steel Directly Consolidated by Rotary Swagingen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-193406en
sync.item.dbtypeVAVen
sync.item.insts2025.04.04 13:56:43en
sync.item.modts2025.04.04 08:32:03en
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Ústav technologie stavebních hmot a dílcůcs
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. ÚST-odbor technologie tváření kovů a plastůcs
thesis.grantorVysoké učení technické v Brně. . Akademie věd ČRcs
thesis.grantorVysoké učení technické v Brně. . Vysoká škola báňská - Technická univerzita Ostravacs
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