Complex Eutectic Growth And Bi Precipitation In Ternary Sn-bi-cu And Sn-bi-ag Alloys

dc.creatorSilva
dc.creatorBismarck Luiz; Garcia
dc.creatorAmauri; Spinelli
dc.creatorJose Eduardo
dc.date2017
dc.datejan
dc.date2017-11-13T13:12:08Z
dc.date2017-11-13T13:12:08Z
dc.date.accessioned2018-03-29T05:50:23Z
dc.date.available2018-03-29T05:50:23Z
dc.identifierJournal Of Alloys And Compounds. Elsevier Science Sa, v. 691, p. 600 - 605, 2017.
dc.identifier0925-8388
dc.identifier1873-4669
dc.identifierWOS:000386227900074
dc.identifier10.1016/j.jallcom.2016.09.003
dc.identifierhttp://www.sciencedirect.com/science/article/pii/S0925838816327372
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/326814
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1363839
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionSn-34 wt%Bi, Sn-34 wt%Bi-2wt%Ag and Sn-34 wt%Bi-0.7 wt%Cu alloys have been directionally solidified (DS) under a broad range of solidification cooling rates. Microstructures have been characterized with emphasis on both eutectic growth and precipitation of Bi within the beta-Sn dendritic matrix. The eutectic growth, for all alloys examined, is shown to be associated with the coexistence of coarse and fine lamellar structures with different length-scale of lamellar spacing (lambda). Experimental growth relations of l vs. the cooling rate have been proposed. The length-scale of the lamellae in the fine eutectic ranges from 0.8 to 2.5 mm while in the coarse eutectic from 1.8 to 4.0 mm. Taking as reference the Sn-Bi alloy, both the spacing between Bi precipitates (lambda(p)) and the fine eutectic spacing (lambda(fine)) increase with Cu and Ag additions, whereas lambda(coarse) remains roughly unaltered. Both ternary Sn-Bi-Ag and Sn-Bi-Cu alloys are shown to have worse distributions of both lamellae in the fine eutectic and of precipitates within Sn-rich dendrites, which resulted in decrease in hardness. (C) 2016 Elsevier B.V. All rights reserved.
dc.description691
dc.description600
dc.description605
dc.descriptionFAPESP (Sao Paulo Research Foundation, Brazil) [2013/08259-3, 2015/11863-5]
dc.descriptionCAPES-COFECUB [857/15]
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.languageEnglish
dc.publisherElsevier Science SA
dc.publisherLausanne
dc.relationJournal of Alloys and Compounds
dc.rightsfechado
dc.sourceWOS
dc.subjectSn-bi-(ag/cu) Alloys
dc.subjectTernary Eutectic
dc.subjectSolidification
dc.subjectMicrostructure
dc.subjectEutectic Spacing
dc.titleComplex Eutectic Growth And Bi Precipitation In Ternary Sn-bi-cu And Sn-bi-ag Alloys
dc.typeArtículos de revistas


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