Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/13316
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dc.contributor.authorOktay, S.tr
dc.contributor.authorDi Nunzio, P. E.-
dc.contributor.authorCesile, M. C.-
dc.contributor.authorDavut, Kemaltr
dc.contributor.authorŞeşen, M. K.tr
dc.date.accessioned2023-04-19T12:36:47Z-
dc.date.available2023-04-19T12:36:47Z-
dc.date.issued2022-
dc.identifier.issn1450-5339-
dc.identifier.issn2217-7175-
dc.identifier.urihttps://doi.org/10.2298/JMMB220304028O-
dc.identifier.urihttps://hdl.handle.net/11147/13316-
dc.description.abstractThe boron-free S700MC steel is usually produced by exploiting the properties of a ferrite-bainite mixed microstructure formed by coiling the strips at a temperature of about 450 degrees C, i.e.below the bainite starting temperature. With the aim of further enhancing the mechanical properties of 6 to 10 mm thick strips, industrial tests were carried out at a coiling temperature of 600 degrees C to promote the formation of a structure of ferrite and carbides, which is also acceptable for this type of steel. Unexpectedly, a microstructure composed of ferrite and martensite was obtained. Compared to the ferritic-bainitic grade, the new structure is characterized by a slight decrease of the yield point but by an increase of the ultimate tensile strength by no less than 80 MPa, with a transition from a quasi-discontinuous to a clearly continuous yielding behaviour. Accordingly, the ratio of yield strength to tensile strength decreases from 0.90 to 0.75 and the impact energy decreases by 35 J and 60 J for the two gauge levels, respectively. The mechanical behaviour of the strips coiled at high temperature is explained as a direct consequence of the dual phase structure with a hard phase interspersed in a soft ferrite matrix. The presence of martensite is explained by the so-called incomplete bainite reaction. The partial transformation into ferrite after coiling and the long time required for the coil to cool down stabilize the untransformed austenite due to the carbon enrichment making bainite formation at lower temperatures impossible.en_US
dc.language.isoenen_US
dc.publisherTechnical Faculty in Boren_US
dc.relation.ispartofJournal of Mining and Metallurgy Section B-Metallurgyen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectHSLA steelsen_US
dc.subjectPhase transformationen_US
dc.subjectMicrostructureen_US
dc.subjectEBSD techniqueen_US
dc.subjectMechanical propertiesen_US
dc.titleEffect of coiling temperature on the structure and properties of thermo-mechanically rolled S700mc steelen_US
dc.title.alternativeUticaj temperature namotavanja na strukturu i svojstva termo mehanički valjanog S700mc čelikasr
dc.typeArticleen_US
dc.institutionauthorDavut, Kemal-
dc.departmentİzmir Institute of Technology. Materials Science and Engineeringen_US
dc.identifier.volume58en_US
dc.identifier.issue3en_US
dc.identifier.startpage475en_US
dc.identifier.endpage489en_US
dc.identifier.wosWOS:000917741600013en_US
dc.identifier.scopus2-s2.0-85154562185en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.identifier.doi10.2298/JMMB220304028O-
dc.identifier.scopusqualityQ3-
item.openairetypeArticle-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.grantfulltextopen-
item.fulltextWith Fulltext-
item.languageiso639-1en-
item.cerifentitytypePublications-
crisitem.author.dept03.09. Department of Materials Science and Engineering-
Appears in Collections:Materials Science and Engineering / Malzeme Bilimi ve Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
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