INVESTIGATION OF MECHANICAL PROPERTIES OF ACCELERATED COOLED AND SELF-TEMPERED H-TYPE STRUCTURAL SECTIONS

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dc.authoridAHLATCI, Hayrettin/0000-0002-6766-4974
dc.authoridYagiz, Onur/0000-0003-1207-5862
dc.authoridEsen, Ismail/0000-0002-7853-1464
dc.contributor.authorIsikgul, A.
dc.contributor.authorAhlatci, H.
dc.contributor.authorEsen, I.
dc.contributor.authorTuren, Y.
dc.contributor.authorYagiz, O.
dc.date.accessioned2024-09-29T16:07:45Z
dc.date.available2024-09-29T16:07:45Z
dc.date.issued2023
dc.departmentKarabük Üniversitesien_US
dc.description.abstractThis study investigates mechanical properties of accelerated cooled and self-tempered (AC-ST) H-type S275JR quality steel sections in HEA120 and HEB120 sizes. The cooling process is conducted with a specially manufactured system that sprays a coolant consisting of a water + compressed air mixture on the section surfaces. Cooling times were applied as 10 and 30 seconds using 4 and 12 bar compressed air + water at an average constant pressure of 5 bar and a constant flow rate of 0.08 kg/s. In the HEA120 sections, the highest cooling rate was obtained with 83 degrees C/s in the web region under the cooling time of 30 s and the air pressure cooling condition of 12 bar. At the cooling rate up to 6 degrees C/s, the microstructure is transformed to acicular ferrite and polygonal ferrite phase from Ferrite+Pearlite. But upper bainite phase was formed at a cooling rate of 30 degrees C/s, and a small amount of martensite and lower bainite microstructures were observed at a cooling rate of 60 degrees C/s and above. The hardness in the untreated sections, in the range of 106-120 HB, was increased to 195 HB at a cooling rate of 83 C/s in the web region of the HEA120 section. For a cooling rate of 23 degrees C/s, the maximum compressive residual stresses of -352 MPa are measured in the crotch region of the HEB120. And for a cooling rate of 6 degrees C/s, the maximum tensile residual stresses of 442 MPa were determined in the flange region of the HEA120 section.en_US
dc.description.sponsorshipKarabuk University [KBUBAP-22-KP-084]; Scientific and Technological Research Council of Turkey [222M441]en_US
dc.description.sponsorshipThe authors would like to thank Karabuk University for supporting the preliminary studies with the BAP project coded KBUBAP-22-KP-084, and the Scientific and Technological Research Council of Turkey for supporting the design/manufacturing of the system with the Tubitak1005 project coded 222M441.en_US
dc.identifier.doi10.24425/amm.2023.145493
dc.identifier.endpage1204en_US
dc.identifier.issn1733-3490
dc.identifier.issn2300-1909
dc.identifier.issue3en_US
dc.identifier.scopus2-s2.0-85172883696en_US
dc.identifier.scopusqualityQ4en_US
dc.identifier.startpage1191en_US
dc.identifier.urihttps://doi.org/10.24425/amm.2023.145493
dc.identifier.urihttps://hdl.handle.net/20.500.14619/7133
dc.identifier.volume68en_US
dc.identifier.wosWOS:001106664500043en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherPolska Akad Nauk, Polish Acad Sciences, Inst Metall & Mater Sci Pasen_US
dc.relation.ispartofArchives of Metallurgy and Materialsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectH-Type Sectionsen_US
dc.subjectAccelerated Cooling and Self-Tempering (AC-ST)en_US
dc.subjectConstruction Steelen_US
dc.subjectCooling Rateen_US
dc.titleINVESTIGATION OF MECHANICAL PROPERTIES OF ACCELERATED COOLED AND SELF-TEMPERED H-TYPE STRUCTURAL SECTIONSen_US
dc.typeArticleen_US

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