Cellular/dendritic Arrays And Intermetallic Phases Affecting Corrosion And Mechanical Resistances Of An Al-mg-si Alloy

dc.creatorBrito
dc.creatorC; Vida
dc.creatorT; Freitas
dc.creatorE; Cheung
dc.creatorN; Spinelli
dc.creatorJE; Garcia
dc.creatorA
dc.date2016
dc.date2016-12-06T18:30:40Z
dc.date2016-12-06T18:30:40Z
dc.date.accessioned2018-03-29T02:03:15Z
dc.date.available2018-03-29T02:03:15Z
dc.identifier1873-4669
dc.identifierJournal Of Alloys And Compounds. ELSEVIER SCIENCE SA, n. 673, p. 220 - 230.
dc.identifier0925-8388
dc.identifierWOS:000373466400030
dc.identifier10.1016/j.jallcom.2016.02.161
dc.identifierhttp://www-sciencedirect-com.ez88.periodicos.capes.gov.br/science/article/pii/S0925838816304285
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/320092
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1310858
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionOutdoor applications of Al-Mg-Si alloys have been specified due to their very good corrosion resistance when compared with those of other aluminum alloys. Nevertheless, these alloys still have corrosion problems. One of the interests consists in characterizing the microstructure evolution, which is supposed to have important role on the final properties. In many aluminum alloys, the effects of intermetallics on both the corrosion and mechanical behavior is of industrial interest. Particularly concerning Al-Mg-Si alloys, hardly anything is known about the influence of the Mg2Si phase. This work aims to encompass such analyses on an Al-3.0 wt% Mg-1.0 wt% Si alloy directionally solidified under a wide range of cooling rates. Experimental results include primary dendritic and cellular spacings, nature and distribution of intermetallics associated with corrosion potential, pitting potential, current density, ultimate tensile strength and elongation. A high-cooling rate cellular region has been identified, followed by a dendritic region that occurred for cooling rates lower than 0.8 K/s. The cellular spacing varied from about 16 mm to 38 mm whereas the primary dendritic arm spacing varied from 120 mm to 270 mm. The alpha-Al cellular region is shown to be characterized by finely dispersed Mg2Si and Fe-bearing particles, which allowed better mechanical properties (strength and elongation) and better corrosion resistance to be attained. Both mechanical strength and corrosion resistance (for 0.15 M and 0.5 M NaCl electrolytes) is shown to be unaffected by the scale of lambda(1) within the dendritic region. (C) 2016 Elsevier B.V. All rights reserved.
dc.description673
dc.description
dc.description220
dc.description230
dc.descriptionFAPESP-Sao Paulo Research Foundation, Brazil [2012/08494-0, 2013/23396-7, 2013/15478-3, 2014/50502-5, 2014/25809-0]
dc.descriptionCNPq (The Brazilian Research Council)
dc.descriptionCAPES-COFECUB [857/15]
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description
dc.description
dc.description
dc.languageEnglish
dc.publisherELSEVIER SCIENCE SA
dc.publisherLAUSANNE
dc.relationJournal of Alloys and Compounds
dc.rightsfechado
dc.sourceWOS
dc.subjectAl-mg-si Alloy
dc.subjectSolidification
dc.subjectMicrostructure
dc.subjectMechanical Properties
dc.subjectCorrosion Resistance
dc.titleCellular/dendritic Arrays And Intermetallic Phases Affecting Corrosion And Mechanical Resistances Of An Al-mg-si Alloy
dc.typeArtículos de revistas


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