Influence of Zr and nano-Y2O3 additions on thermal stability and improved hardness in mechanically alloyed Fe base ferritic alloys

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dc.contributor.authorKotan, Hasan
dc.contributor.authorDarling, Kris A.
dc.contributor.authorScattergood, Ronald O.
dc.contributor.authorKoch, Carl C.
dc.date.accessioned2024-02-23T14:12:31Z
dc.date.available2024-02-23T14:12:31Z
dc.date.issued2014
dc.departmentNEÜen_US
dc.description.abstractThe motivation of this work was driven to improve the thermal stability in systems where polymorphic transformations can result in an additional driving force, upsetting the expected thermodynamic stability. In this study, Fe92Ni8 alloys with Zr and nano-Y2O3 additions were produced by ball milling and then annealed at high temperatures. Emphasis was placed on understanding the effects of dispersed nano-Y2O3 particle additions and their effect on microstructural stability at and above the bcc-to-fcc transformation occurring at 700 degrees C in Fe-Ni systems. Results reveal that microstructural stability and hardness can be promoted by a combination of Zr and Y2O3 additions, that being mostly effective for stability before and after phase transition, respectively. The mechanical strength of these alloys is achieved by a unique microstructure comprised a ultra-fine grain Fe base matrix, which contains dispersions of both nano-scale in-situ formed Zr base intermetallics and ex-situ added Y2O3 secondary oxide phases. Both of these were found to be essential for a combination of high thermal stability and high mechanical strength properties. (C) 2014 Elsevier B.V. All rights reserved.en_US
dc.description.sponsorshipNSF-DMR [1005677]; Necmettin Erbakan University; Direct For Mathematical & Physical Scien; Division Of Materials Research [1005677] Funding Source: National Science Foundationen_US
dc.description.sponsorshipThe research reported in this paper was supported by NSF-DMR under Grant No. 1005677 and by Necmettin Erbakan University.en_US
dc.identifier.doi10.1016/j.jallcom.2014.07.054
dc.identifier.endpage1018en_US
dc.identifier.issn0925-8388
dc.identifier.issn1873-4669
dc.identifier.scopus2-s2.0-84905591068en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage1013en_US
dc.identifier.urihttps://doi.org/10.1016/j.jallcom.2014.07.054
dc.identifier.urihttps://hdl.handle.net/20.500.12452/12094
dc.identifier.volume615en_US
dc.identifier.wosWOS:000342245700157en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Science Saen_US
dc.relation.ispartofJournal Of Alloys And Compoundsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectNanouystalline Materialsen_US
dc.subjectThermal Stabilityen_US
dc.subjectGrain Growthen_US
dc.subjectHardnessen_US
dc.subjectOdsen_US
dc.titleInfluence of Zr and nano-Y2O3 additions on thermal stability and improved hardness in mechanically alloyed Fe base ferritic alloysen_US
dc.typeArticleen_US

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