Improvement of tensile properties by controlling the microstructure and crystallographic data in commercial pearlitic carbon-silicon steel via quenching and partitioning (Q&P) process

dc.contributor.authorMohtadi-Bonab, M. A.
dc.contributor.authorAriza, Edwan A.
dc.contributor.authorLoureiro, Rodrigo C.P.
dc.contributor.authorCenteno, Dany
dc.contributor.authorCarvalho, Felipe M.
dc.contributor.authorAvila, Julian A. [UNESP]
dc.contributor.authorMasoumi, Mohammad
dc.contributor.institutionUniversity of Bonab
dc.contributor.institutionUniversidad Tecnologica de Pereira
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionFederal University of Ceará
dc.contributor.institutionInstitute for Technological Research
dc.contributor.institutionUniversitat Politècnica de Catalunya
dc.contributor.institutionUniversidade Federal do ABC (UFABC)
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.description.abstractIn the current research, a complex microstructure and crystallographic data were developed through quenching and partitioning (Q&P) process to improve tensile properties of commercial pearlitic carbon-silicon steel. Two-stage Q&P process, including full austenitization, quenching at 220 °C, followed by two different partitioning temperatures, was applied to the as-received specimen to generate a complex microstructure composed of tempered martensite, bainite, ultrafine carbides/martensite-austenite/retained austenite particles. Microstructure and crystallographic data were investigated by scanning electron microscopy, electron backscattered diffraction (EBSD), and X-ray diffraction techniques. Then, hardness and tensile properties were evaluated to confirm the improvement of mechanical properties. Dilatation-temperature curves exhibited the kinetics of martensitic and bainitic transformation during quenching and isothermal partitioning stages. The presence of nano-carbide particles inside athermal martensite was confirmed by electron microscopy due to the pre-formed martensite carbon depletion during the partitioning stage coupled with bainitic transformation. The formation of preferential atomic-compact <111> direction in BCC (martensite/bainite) plates characterized by EBSD, could enhance ductility by providing adequate slip systems. Point-to-point misorientation analyses demonstrated a slight dominance of low angle boundaries proportion in bainitic dominance structure in Q&P-220-375 specimen, which could be used in phase characterization. Results revealed that the development of nanoscale carbide dispersed in refined bainite/martensite matrix boosted the yield and ultimate tensile strength by over 100% and 110% compared to the initial pearlitic microstructure. However, ductility reduced to half value in Q&P-220-325 and Q&P-220-375 specimens.en
dc.description.affiliationDepartment of Mechanical Engineering University of Bonab
dc.description.affiliationEscuela de Tecnologıa Mecanica Universidad Tecnologica de Pereira, Carrera 27 #10-02 Alamos
dc.description.affiliationMetallurgical and Materials Engineering Department University of São Paulo, Av. Prof. Mello Moraes
dc.description.affiliationMaterials Characterization Laboratory (LACAM) Department of Metallurgical and Materials Engineering Federal University of Ceará Campus Do Pici
dc.description.affiliationMetallurgical Processes Laboratory Institute for Technological Research, Av. Prof. Almeida Prado, 532 São Paulo
dc.description.affiliationDepartment of Strength of Materials and Structural Engineering Barcelona School of Engineering (ETSEIB) Universitat Politècnica de Catalunya
dc.description.affiliationCentro de Engenharia Modelagem e Ciências Sociais Aplicadas Universidade Federal Do ABC, Santo André
dc.description.affiliationDepartment of Aeronautical Engineering School of Engineering of São João (FESJ) São Paulo State University, São João da Boa Vista
dc.description.affiliationUnespDepartment of Aeronautical Engineering School of Engineering of São João (FESJ) São Paulo State University, São João da Boa Vista
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFinanciadora de Estudos e Projetos
dc.description.sponsorshipFundação Cearense de Apoio ao Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipUniversité de Franche-Comté
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipMinistério da Ciência, Tecnologia e Inovação
dc.description.sponsorshipIdFAPESP: 2021/02926-4
dc.description.sponsorshipIdCNPq: 304157/2020-1
dc.description.sponsorshipIdMinistério da Ciência, Tecnologia e Inovação: 442577/2019-2
dc.identifier.citationJournal of Materials Research and Technology, v. 23, p. 845-858.
dc.relation.ispartofJournal of Materials Research and Technology
dc.subjectCarbon saturated martensite
dc.subjectKernel average misorientation
dc.subjectSlip systems
dc.titleImprovement of tensile properties by controlling the microstructure and crystallographic data in commercial pearlitic carbon-silicon steel via quenching and partitioning (Q&P) processen