Isothermal Annealing of a Thermally Stabilized Fe-Based Ferritic Alloy

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dc.contributor.authorKotan, Hasan
dc.contributor.authorDarling, Kris A.
dc.date.accessioned2024-02-23T13:59:40Z
dc.date.available2024-02-23T13:59:40Z
dc.date.issued2015
dc.departmentNEÜen_US
dc.description.abstractIn this study, the stability and microstructural evolution, including grain size and hardness of nanocrystalline Fe91Ni8Zr1 alloyed powders, produced by ball milling, were investigated after annealing at 900 and 1000 A degrees C for up to 24 h. Results indicate that rapid grain growth to the micron scale occurs within the first few minutes of exposure to the elevated annealing temperatures. However, despite the loss of nanocrystallinity, an extremely stable and efficient hardening effect persists, which has been found to be equal to that predicted by Hall-Petch strengthening even at the smallest grain sizes. The mechanical properties of the samples consolidated to bulk via equal channel angular extrusion at 900 A degrees C were evaluated by uniaxial compression at room and elevated temperatures. Results reveal high compressive yield stress as well as the appearance and disappearance of a yield drop indicating the presence of coherent (GP zone like) precipitates within the microstructure. Such a hardening mechanism has implications for developing new Fe-Ni-based alloys exhibiting a combination of high strength and ductility for high temperature applications.en_US
dc.description.sponsorship[BAP-142019001]en_US
dc.description.sponsorshipThis work was supported partially by BAP-142019001. The author is indebted with NanoMEGAS for ASTAR analyses and with U.S. Army Research Laboratory for ECAE consolidation, compressive tests and FIB investigations.en_US
dc.identifier.doi10.1007/s11665-015-1613-z
dc.identifier.endpage3276en_US
dc.identifier.issn1059-9495
dc.identifier.issn1544-1024
dc.identifier.issue9en_US
dc.identifier.scopus2-s2.0-84939653755en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage3271en_US
dc.identifier.urihttps://doi.org/10.1007/s11665-015-1613-z
dc.identifier.urihttps://hdl.handle.net/20.500.12452/11254
dc.identifier.volume24en_US
dc.identifier.wosWOS:000360014000007en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.ispartofJournal Of Materials Engineering And Performanceen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectFe-Based Alloysen_US
dc.subjectGrain Growthen_US
dc.subjectIntermetallicsen_US
dc.subjectIsothermal Annealingen_US
dc.subjectMechanical Propertiesen_US
dc.titleIsothermal Annealing of a Thermally Stabilized Fe-Based Ferritic Alloyen_US
dc.typeArticleen_US

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