Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/346374
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dc.contributor.CRUESPUNIVERSIDADE ESTADUAL DE CAMPINASpt_BR
dc.contributor.authorunicampProni, Cecilia Tereza Weishaupt-
dc.contributor.authorunicampTorres, Luis Vanderlei-
dc.contributor.authorunicampZoqui, Eugênio José-
dc.typeArtigopt_BR
dc.titleECAP : an alternative route for producing AlSiCu for use in SSM processingpt_BR
dc.contributor.authorProni, C.T.W.-
dc.contributor.authorTorres, L.V.-
dc.contributor.authorHaghayeghi, R.-
dc.contributor.authorZoqui, E.J.-
dc.subjectMicroestruturapt_BR
dc.subject.otherlanguageMicrostructurept_BR
dc.description.abstractIn thixoforming processes control of the solid-to-liquid transition and grain size of the mush metal is essential. If eutectic melting is avoided, subsequent melting of the primary phase should be controllable. To achieve this, the sensitivity of the liquid fraction, dfL/dT, at the desired liquid fraction, fL, exclusively for the primary phase should be as low as possible (< 0.03 °C− 1). In addition, the smaller the grain size, the better the rheological behaviour. However, for aluminium alloys with a high silicon content, current commercial processes such as continuous casting result in materials with a large grain size. This paper therefore proposes a new method based on equal channel angular pressing (ECAP) for producing aluminium-copper alloys with a low silicon content. The alloys investigated were Al5Si2.8Cu, Al6Si2.8Cu and Al7Si2.8Cu. To evaluate the semisolid behaviour of these alloys after ECAP processing as well as the effect of heat treatment on globularization of the alloys, they were heated up to 590, 580 and 575 °C, respectively, to achieve a solid fraction of 40% and subsequently soaked for 0, 30, 90 and 210 s and cooled rapidly. The structures of the three alloys had an excellent response to the recovery and recrystallization mechanisms, and refined microstructures ideal for thixoforming were produced. Grain and globule sizes of less than 80 μm and a circularity shape factor of more than 0.60 were obtained. All the alloys exhibited good morphological stability in the semisolid state without significant changes in size or shape, indicating homogeneous apparent viscosity and, consequently, homogeneous die filling. The findings of this study suggest that ECAP is a promising route for the production of semisolid raw material for use in thixoformingpt_BR
dc.relation.ispartofMaterials characterizationpt_BR
dc.publisher.cityPhiladelphia, PApt_BR
dc.publisher.countryEstados Unidospt_BR
dc.publisherElsevierpt_BR
dc.date.issued2016-
dc.date.monthofcirculationAug.pt_BR
dc.language.isoengpt_BR
dc.description.volume118pt_BR
dc.description.firstpage252pt_BR
dc.description.lastpage262pt_BR
dc.rightsFechadopt_BR
dc.sourceWOSpt_BR
dc.identifier.issn1044-5803pt_BR
dc.identifier.eissn1873-4189pt_BR
dc.identifier.doi10.1016/j.matchar.2016.06.002pt_BR
dc.identifier.urlhttps://www.sciencedirect.com/science/article/pii/S1044580316301681pt_BR
dc.description.sponsorshipCONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQpt_BR
dc.description.sponsorshipCOORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPESpt_BR
dc.description.sponsorshipFUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESPpt_BR
dc.description.sponsordocumentnumberPQ:306896/2013-3; PDJ: 505859/2013-0; TWAS:190088/2014-1pt_BR
dc.description.sponsordocumentnumberNão tempt_BR
dc.description.sponsordocumentnumber2013-09961-3pt_BR
dc.date.available2020-07-30T15:34:02Z-
dc.date.accessioned2020-07-30T15:34:02Z-
dc.description.provenanceSubmitted by Susilene Barbosa da Silva (susilene@unicamp.br) on 2020-07-30T15:34:02Z No. of bitstreams: 0. Added 1 bitstream(s) on 2021-01-08T14:01:10Z : No. of bitstreams: 1 000383292000030.pdf: 6327214 bytes, checksum: 12efb3a626349212ebf7dc8ea5fc2f15 (MD5) Bitstreams deleted on 2021-01-13T13:27:39Z: 000383292000030.pdf,. Added 1 bitstream(s) on 2021-01-13T13:30:44Z : No. of bitstreams: 1 000383292000030.pdf: 6327214 bytes, checksum: 12efb3a626349212ebf7dc8ea5fc2f15 (MD5)en
dc.description.provenanceMade available in DSpace on 2020-07-30T15:34:02Z (GMT). No. of bitstreams: 0 Previous issue date: 2016en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/346374-
dc.contributor.departmentSem informaçãopt_BR
dc.contributor.departmentSem informaçãopt_BR
dc.contributor.departmentDepartamento de Engenharia de Fabricaçãopt_BR
dc.contributor.unidadeFaculdade de Engenharia Mecânicapt_BR
dc.contributor.unidadeFaculdade de Engenharia Mecânicapt_BR
dc.contributor.unidadeFaculdade de Engenharia Mecânicapt_BR
dc.subject.keywordThixoformingpt_BR
dc.subject.keywordEqual channel angular pressing (ECAP)pt_BR
dc.subject.keywordAl–Cu–Si alloypt_BR
dc.subject.keywordSemisolid materialpt_BR
dc.identifier.source000383292000030pt_BR
dc.creator.orcid0000-0001-8607-0066pt_BR
dc.creator.orcidSem informaçãopt_BR
dc.creator.orcid0000-0002-3614-0051pt_BR
dc.type.formArtigopt_BR
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