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dc.contributor.authorBriones, Francisco
dc.contributor.authorSeriacopi, Vanessa
dc.contributor.authorMartínez, Carola
dc.contributor.authorValin, José Luis
dc.contributor.authorCenteno, Dany
dc.contributor.authorMachado, Izabel Fernanda
dc.date.accessioned2024-10-15T21:37:47Z
dc.date.available2024-10-15T21:37:47Z
dc.date.issued2023
dc.identifier.issn2238-7854
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85163208063&doi=10.1016%2fj.jmrt.2023.06.099&partnerID=40&md5=293df96f0571e784df9776c48d51a580
dc.identifier.urihttps://repositorio.maua.br/handle/MAUA/1441
dc.description.abstractSpark Plasma Sintering (SPS) is a pressure-assisted sintering process in which high density and mechanical properties are usually reached. This study applied the SPS to consolidate copper powder using different sintering pressures and pressure routes during holding time or heating. In the first route, the pressure was maintained (around 15 MPa) during the heating up to the sintering temperature (650 ºC), and the pressure was increased during the holding time. In the second route, the pressure was raised during the heating and kept constant during holding time at 650 ºC. Three different pressure levels were applied on each route: 110, 65, and 50 MPa. Microstructural evolution was investigated using densification (Archimedes method), scanning electron microscopy (SEM), hardness, and X-ray diffraction (XRD). The increase in pressure improves the microstructural features. In addition, in the first route, in which higher pressure rates were found, grain growth inhibition was observed, and densification was also improved significantly. The smallest crystallite size and highest microstrain were also observed at higher pressures. The increase in pressure also led to a rise in microhardness (17%), a decrease in pore volume fraction (10.5%), and an increase in pore circularity, causing substantial variations between the microstructures of samples. A finite element method (FEM) analysis was conducted using a thermo-mechanical approach to evaluate the stress distribution in the two different sintering routes. The results agree with the experimental results, and more pronounced effects were found in the first route because of higher compressive stresses, corroborating the results of microstrain and hardness. © 2023 The Authorsen
dc.description.sponsorshipFAPESP
dc.description.sponsorshipCAPES
dc.description.sponsorshipCNPq
dc.languageInglêspt_BR
dc.publisherElsevier Editora Ltdaen
dc.relation.ispartofJournal of Materials Research and Technology
dc.rightsAcesso Aberto
dc.sourceScopusen
dc.subjectCopperen
dc.subjectMicrostructureen
dc.subjectPressure application route influenceen
dc.subjectSPSen
dc.subjectCrystallite sizeen
dc.subjectDensity (specific gravity)en
dc.subjectGrain growthen
dc.subjectHardnessen
dc.subjectMicrostructural evolutionen
dc.subjectScanning electron microscopyen
dc.subjectDensificationsen
dc.subjectEffect of pressureen
dc.subjectHigh pressureen
dc.subjectHolding timeen
dc.subjectIncrease in pressureen
dc.subjectMicro-strainen
dc.subjectPressure applicationsen
dc.subjectPressure assisted sinteringen
dc.subjectSpark-plasma-sinteringen
dc.subjectSpark plasma sinteringen
dc.titleThe effects of pressure and pressure routes on the microstructural evolution and mechanical properties of sintered copper via SPSen
dc.typeArtigo de Periódicopt_BR
dc.identifier.doi10.1016/j.jmrt.2023.06.099
dc.description.affiliationDepartamento de Engenharia Mecatrônica e Sistemas Mecânicos, Escola Politécnica, Universidade de São Paulo, Av. Prof. Mello Moraes 2231, SP, São Paulo, 05508-030, Brazil
dc.description.affiliationEscuela de Ingeniería Mecánica, Pontificia Universidad Católica de Valparaíso, Los Carrera, Quilpué, 01567, Chile
dc.description.affiliationDepartamento de Engenharia Mecânica, Instituto Mauá de Tecnologia, Praça Mauá 01, São Caetano Do Sul, 09580-900, Brazil
dc.description.affiliationDepartamento de Ingeniería de Obras Civiles, Universidad de La Frontera, Francisco Salazar, Temuco, 01145, Chile
dc.description.affiliationDepartamento de Engenharia Metalúrgica e de Materiais, Escola Politécnica da Universidade de São Paulo, Av. Prof. Mello Moraes 2463, SP, São Paulo, 05508-030, Brazil
dc.identifier.scopus2-s2.0-85163208063
dc.citation.epage2470
dc.citation.spage2455
dc.citation.volume25


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