dc.creatorBalbi, Marcela Ángela
dc.creatorAlvarez, Iris
dc.creatorArmas, Alberto Franklin
dc.date.accessioned2019-11-11T20:40:18Z
dc.date.accessioned2022-10-14T23:57:17Z
dc.date.available2019-11-11T20:40:18Z
dc.date.available2022-10-14T23:57:17Z
dc.date.created2019-11-11T20:40:18Z
dc.date.issued2018-08
dc.identifierBalbi, Marcela Ángela; Alvarez, Iris; Armas, Alberto Franklin; Effect of holding time at an intercritical temperature on the microstructure and tensile properties of a ferrite-martensite dual phase steel; Elsevier Science Sa; Materials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing; 733; 8-2018; 1-8
dc.identifier0921-5093
dc.identifierhttp://hdl.handle.net/11336/88544
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/4322023
dc.description.abstractTo analyze the influence of the initial microstructure in the production of a dual phase (DP) steel on the mechanical properties, a commercial DP steel was subjected to two heat treatments (HT): step quenching (SQ) and intermediate quenching (IQ). SQ samples were austenitized at 930 °C for 20 min, then annealed at 830 °C for 5, 15, 30, 60 and 120 min and finally water quenched. Shorter annealing times show allotriomorphic ferrite and martensite while at longer time polygonal ferrite is formed. Tensile tests showed that yield and tensile strength are higher than those of the commercial DP steel and besides, the uniform elongation is smaller. IQ samples were water quenched after austenitization and then annealed at 830 °C for the same holding times and water quenched again. The microstructure consists of martensite dispersed in a ferrite matrix. The remarkable results are that these samples had similar tensile properties to that of the as-received DP steel. Tensile properties were analyzed as a function of the characteristic microstructure and the assessment of the alloying elements partition during the different HTs. Evaluation of the Kolmogorov-Johnson-Mehl-Avrami theory indicates that the transformation in SQ and in IQ samples corresponds to a diffusional process.
dc.languageeng
dc.publisherElsevier Science Sa
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.msea.2018.07.029
dc.relationinfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0921509318309547
dc.rightshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectDUAL PHASE STEELS
dc.subjectINTERCRITICAL HEAT TREATMENTS
dc.subjectMECHANICAL PROPERTIES
dc.subjectMICROSTRUCTURE
dc.subjectPARTITIONING
dc.titleEffect of holding time at an intercritical temperature on the microstructure and tensile properties of a ferrite-martensite dual phase steel
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


Este ítem pertenece a la siguiente institución