Effect of copper and magnesium on the microstructure of centrifugally cast Al-19%Si alloys

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dc.contributor.authorCONTATORI, CHESTER
dc.contributor.authorCOUTO, ANTONIO A.
dc.contributor.authorVATAVUK, JAN
dc.contributor.authorBORGES, ARNALDO A.C.
dc.contributor.authorLIMA, NELSON B. de
dc.contributor.authorBALDAN, RENATO
dc.coverageInternacionalpt_BR
dc.date.accessioned2018-11-29T13:11:44Z
dc.date.available2018-11-29T13:11:44Z
dc.date.issued2018pt_BR
dc.description.abstractHypereutectic Al-Si alloys can be used in applications that require high wear resistance. Such wear resistance is achieved by the presence of hard primary silicon particles, allied to the formation of Mg2Si intermetallic phase when magnesium is added in this alloy. Centrifugal casting generates a gradient in the microstructure of hypereutectic Al-Si alloys that can favor such applications. Cylindrical components of Al-19%Si alloy containing added copper and magnesium contents were processed by centrifugal casting. The purpose of this study is to investigate the formation and segregation of particles of primary silicon (β) and Mg2Si in Al-19%Si alloy containing additions of copper and magnesium. Because the density of silicon (2.33 g/cm3) and Mg2Si (1.88 g/cm3) is lower than that of aluminum (2.67 g/cm3), centrifugal casting causes primary silicon (β) and Mg2Si particles to concentrate more at the outer wall of the centrifuged pipe. In this study, primary silicon (β) and Mg2Si particles were found to be retained at the outer wall of the pipe. It is believed that the rapid cooling of the molten metal in the region of contact with the mold, whose temperature is lower than that of the molten metal, allied to the centrifugal force, prevented the particles from migrating to the inner wall of the pipe. The microstructure shows a gradient in the distribution of these phases, enabling the production of a functionally graded material. The addition of copper and magnesium leads to the formation of Mg2Si and Al5Cu2Mg8Si6 phases, reducing the amount of primary β phase (Si) particles. In all the evaluated conditions, a tendency is also observed for a gradual increase in the segregation of silicon towards the inner wall along the entire length of the centrifuged pipe.pt_BR
dc.format.extent484-488
dc.identifier.citationCONTATORI, CHESTER; COUTO, ANTONIO A.; VATAVUK, JAN; BORGES, ARNALDO A.C.; LIMA, NELSON B. de; BALDAN, RENATO. Effect of copper and magnesium on the microstructure of centrifugally cast Al-19%Si alloys. <b>Materials Science Forum</b>, v. 930, p. 484-488, 2018. DOI: <a href="https://dx.doi.org/10.4028/www.scientific.net/MSF.930.484">10.4028/www.scientific.net/MSF.930.484</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/29286.
dc.identifier.doi10.4028/www.scientific.net/MSF.930.484pt_BR
dc.identifier.issn0255-5476pt_BR
dc.identifier.orcidaguardandopt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-6444-9224
dc.identifier.percentilfiSem Percentil
dc.identifier.percentilfiCiteScore15.50
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/29286
dc.identifier.vol930pt_BR
dc.relation.ispartofMaterials Science Forumpt_BR
dc.rightsopenAccesspt_BR
dc.subjectaluminium alloys
dc.subjectsilicon alloys
dc.subjectwear resistance
dc.subjectcopper
dc.subjectmagnesium
dc.subjectcasting
dc.subjectmicrostructure
dc.titleEffect of copper and magnesium on the microstructure of centrifugally cast Al-19%Si alloyspt_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorCHESTER CONTATORI
ipen.autorARNALDO AUGUSTO CIQUIELO BORGES
ipen.autorNELSON BATISTA DE LIMA
ipen.autorANTONIO AUGUSTO COUTO
ipen.codigoautor12681
ipen.codigoautor12682
ipen.codigoautor550
ipen.codigoautor394
ipen.contributor.ipenauthorCHESTER CONTATORI
ipen.contributor.ipenauthorARNALDO AUGUSTO CIQUIELO BORGES
ipen.contributor.ipenauthorNELSON BATISTA DE LIMA
ipen.contributor.ipenauthorANTONIO AUGUSTO COUTO
ipen.date.recebimento18-11pt_BR
ipen.identifier.fiSem F.I.pt_BR
ipen.identifier.fiCiteScore0.5
ipen.identifier.ipendoc25073pt_BR
ipen.type.genreArtigo
relation.isAuthorOfPublicationf1fc2a9e-da94-4826-8348-97bf9df72628
relation.isAuthorOfPublication1e59c673-c6f3-4de2-943b-fbc06d9e7e94
relation.isAuthorOfPublication92984f2d-b6bd-4cd9-950a-e1105bf78d83
relation.isAuthorOfPublicationbde343ec-1219-4f47-ab31-55e822cd2ade
relation.isAuthorOfPublication.latestForDiscoveryf1fc2a9e-da94-4826-8348-97bf9df72628
sigepi.autor.atividadeCONTATORI, CHESTER:12681:730:Spt_BR
sigepi.autor.atividadeCOUTO, ANTONIO A.:394:730:Npt_BR
sigepi.autor.atividadeBORGES, ARNALDO A.C.:12682:730:Npt_BR
sigepi.autor.atividadeLIMA, NELSON B. DE:550:730:Npt_BR
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