Effect of Composition, Mechanical Alloying Temperature and Cooling Rate on Martensitic Transformation and Its Reversion in Mechanically Alloyed Stainless Steels

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dc.contributor.authorPolat, Gokhan
dc.contributor.authorKotan, Hasan
dc.date.accessioned2024-02-23T13:59:57Z
dc.date.available2024-02-23T13:59:57Z
dc.date.issued2021
dc.departmentNEÜen_US
dc.description.abstractStainless steels with Fe/Cr/Ni ratios of 74/18/8, 71/17/12, and 55/20/25 were produced from elemental powders by high energy mechanical alloying at both room and cryogenic temperatures. The effect of mechanical alloying temperature on martensitic transformation, the reversion of deformation-induced martensite-to-austenite upon annealing, and the influence of cooling rate on the thermal stability of reversed austenite upon cooling to room temperature were investigated in detail by in-situ and ex-situ X-ray diffraction (XRD) experiments, transmission electron microscopy (TEM) and Thermo-Calc simulations. A relative comparison of stainless steels after room temperature mechanical alloying indicated that the low nickel-containing steel underwent an almost complete martensitic transformation. However, martensitic transformation by deformation through mechanical alloying at room temperature would not be possible with increasing nickel contents but was created partially at cryogenic temperature, the degree of which depended on the steel composition. The in-situ XRD studies exhibited that the deformation-induced martensite completely transformed to austenite at elevated temperatures. The complete reverse transformation temperature simulated by Thermo-Calc software was found to be lower than that of the experimentally determined ones. Additionally, the different cooling rates from the reversed austenite demonstrated that the slower cooling increased the thermal stability of reversed austenite at room temperature. Graphicen_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) [119M120]en_US
dc.description.sponsorshipThis work was supported by the Scientific and Technological Research Council of Turkey (TUBITAK) under Grant Number 119M120. The authors wish to thank the National Nanotechnology Research Center (UNAM-Bilkent University) for FIB and TEM investigations and ONATUS ongoru Teknolojileri Company for the support with the Thermo-Calc simulations.en_US
dc.identifier.doi10.1007/s12540-020-00866-8
dc.identifier.endpage3775en_US
dc.identifier.issn1598-9623
dc.identifier.issn2005-4149
dc.identifier.issue10en_US
dc.identifier.scopus2-s2.0-85090797598en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage3765en_US
dc.identifier.urihttps://doi.org/10.1007/s12540-020-00866-8
dc.identifier.urihttps://hdl.handle.net/20.500.12452/11384
dc.identifier.volume27en_US
dc.identifier.wosWOS:000568145200001en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherKorean Inst Metals Materialsen_US
dc.relation.ispartofMetals And Materials Internationalen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectDeformation-Induced Martensitic Transformationen_US
dc.subjectCryogenic Millingen_US
dc.subjectReverse Transformationen_US
dc.subjectCooling Rateen_US
dc.subjectAustenite Stabilityen_US
dc.subjectThermo-Calc Simulationen_US
dc.titleEffect of Composition, Mechanical Alloying Temperature and Cooling Rate on Martensitic Transformation and Its Reversion in Mechanically Alloyed Stainless Steelsen_US
dc.typeArticleen_US

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