Microstructural Characterization and Hardness Study of Nanostructured CoCrFeNi High Entropy Alloys with Dual Effect of Y and Nano-Sized Y2O3 Additions

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dc.contributor.authorTekin, Mustafa
dc.contributor.authorKotan, Hasan
dc.date.accessioned2024-02-23T13:59:58Z
dc.date.available2024-02-23T13:59:58Z
dc.date.issued2022
dc.departmentNEÜen_US
dc.description.abstractThe motivation of this work is to increase the grain size stability of nanocrystalline CoCrFeNi high entropy alloys (HEA) with Y and Y2O3 additions to strike a balance between thermodynamic and kinetic stabilizations. The nanocrystalline HEAs prepared by mechanical alloying were annealed at different temperatures and characterized by X-ray diffraction, focused ion beam microscopy and micro-hardness test. The results revealed that as-milled nanostructured grain size yielded grain growth upon annealing reaching to 350 nm and 1.3 mu m after annealing at 900 degrees C and 1100 degrees C, respectively, while the addition of Y and Y2O3 appeared to stabilize the grain size in the nano-range after annealing at the same temperatures. Consequently, while the as-milled hardness of CoCrFeNi HEA dropped from 475 HV to around 200 HV after annealing at 1100 degrees C, the elevated hardness of 430 HV was retained with Y and Y2O3 additions after annealing at the same temperature.en_US
dc.description.sponsorshipScientific Research Projects Coordination Unit of Necmettin Erbakan University, Turkey [211219004]en_US
dc.description.sponsorshipThis work was partly supported by the Scientific Research Projects Coordination Unit of Necmettin Erbakan University, Turkey under project number of 211219004.en_US
dc.identifier.doi10.1007/s12666-022-02615-4
dc.identifier.endpage2394en_US
dc.identifier.issn0972-2815
dc.identifier.issn0975-1645
dc.identifier.issue9en_US
dc.identifier.scopus2-s2.0-85130123725en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage2389en_US
dc.identifier.urihttps://doi.org/10.1007/s12666-022-02615-4
dc.identifier.urihttps://hdl.handle.net/20.500.12452/11404
dc.identifier.volume75en_US
dc.identifier.wosWOS:000795633200001en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSpringer Indiaen_US
dc.relation.ispartofTransactions Of The Indian Institute Of Metalsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectMechanical Alloyingen_US
dc.subjectHigh Entropy Alloysen_US
dc.subjectGrain Growthen_US
dc.subjectDual Effecten_US
dc.subjectHardnessen_US
dc.titleMicrostructural Characterization and Hardness Study of Nanostructured CoCrFeNi High Entropy Alloys with Dual Effect of Y and Nano-Sized Y2O3 Additionsen_US
dc.typeArticleen_US

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