Al-Fe hypoeutectic alloys directionally solidified under steady-state and unsteady-state conditions

dc.creatorGoulart, PR
dc.creatorSpinelli, JE
dc.creatorCheung, N
dc.creatorMangelinck-Noel, N
dc.creatorGarcia, A
dc.date2010
dc.dateAUG 13
dc.date2014-11-15T01:42:12Z
dc.date2015-11-26T17:35:45Z
dc.date2014-11-15T01:42:12Z
dc.date2015-11-26T17:35:45Z
dc.date.accessioned2018-03-29T00:17:52Z
dc.date.available2018-03-29T00:17:52Z
dc.identifierJournal Of Alloys And Compounds. Elsevier Science Sa, v. 504, n. 1, n. 205, n. 210, 2010.
dc.identifier0925-8388
dc.identifierWOS:000280928400042
dc.identifier10.1016/j.jallcom.2010.05.089
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/77123
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/77123
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/77123
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1285643
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionThe aim of this work is to evaluate the cellular growth, the nature of Al-Fe intermetallic particles and the eutectic arrangement of Al-Fe hypoeutectic samples solidified at growth rates ranging from 0.05 to 2.5 mm/s. The samples grown at higher solidification velocities were obtained using a water-cooled directional solidification apparatus. A Bridgman-type furnace was used to grow samples in the lower range of solidification velocities and an air-cooled mold was used to generate experimental values in between those obtained by the other two techniques of directional solidification. All casting assemblies were set to support upward directional solidification. Based on the present results, a single experimental power law seems to be enough to fit all experimental values of cell spacing as a function of cooling rate. The wide range of solidification thermal parameters used in the present study was chosen due to the diversity of foundry processes used for the manufacture of Al-Fe alloys components. For instance, low solidification velocities are typical of sand casting processes while high velocities are typical of direct-chill (DC) castings. In order to investigate the nature of the Al-Fe intermetallics, these particles were extracted from the aluminum-rich matrix by using a dissolution technique. Such phases were then investigated by SEM-EDAX microscopy and X-ray diffraction (XRD). It was found that Al(3)Fe is the predominant intermetallic phase in the Bridgman-grown samples and Al(6)Fe prevails in the samples grown in the water-cooled solidification apparatus. (C) 2010 Elsevier B.V. All rights reserved.
dc.description504
dc.description1
dc.description205
dc.description210
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFAEPEX - UNICAMP
dc.descriptionFrench Ministry of Foreign Affairs, Region Provence-Alpes-Cote d'Azur and Brazil
dc.descriptionFAPERN (The Scientific Research Foundation of the State of Rio Grande do Norte, Brazil)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageen
dc.publisherElsevier Science Sa
dc.publisherLausanne
dc.publisherSuíça
dc.relationJournal Of Alloys And Compounds
dc.relationJ. Alloy. Compd.
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectMetals and alloys
dc.subjectIntermetallics
dc.subjectMicrostructure
dc.subjectThermal analysis
dc.subjectPb-sb Alloys
dc.subjectUnidirectional Solidification
dc.subjectDendritic Spacings
dc.subjectCellular Growth
dc.subjectNi-alloys
dc.subjectSelection
dc.subjectAluminum
dc.subjectMicrostructure
dc.subjectParticles
dc.subjectEvolution
dc.titleAl-Fe hypoeutectic alloys directionally solidified under steady-state and unsteady-state conditions
dc.typeArtículos de revistas


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