Thermosolutal convective effects on dendritic array spacings in downward transient directional solidification of Al-Si alloys

dc.creatorSpinelli, JE
dc.creatorPeres, MD
dc.creatorGarcia, A
dc.date2005
dc.date40483
dc.date2014-11-20T05:45:59Z
dc.date2015-11-26T17:15:34Z
dc.date2014-11-20T05:45:59Z
dc.date2015-11-26T17:15:34Z
dc.date.accessioned2018-03-29T00:03:48Z
dc.date.available2018-03-29T00:03:48Z
dc.identifierJournal Of Alloys And Compounds. Elsevier Science Sa, v. 403, n. 41671, n. 228, n. 238, 2005.
dc.identifier0925-8388
dc.identifierWOS:000233311800035
dc.identifier10.1016/j.jallcom.2005.06.010
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/58180
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/58180
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/58180
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1282078
dc.descriptionSolidification thermal variables, such as tip growth rate, tip cooling rate, local solidification time and dendrite arm spacings, have been measured in Al-Si hypoeutectic alloys directionally solidified under downward transient heat flow conditions. It is a well-known fact that the dendritic spacings can affect not only microsegregation profiles but also the formation of secondary phases within interdendritic regions, which influences mechanical properties of cast structures. A reduced number of studies have been carried out in order to analyze the effects of melt convection within the interdendritic region or to verify the influence of growth direction on dendritic arm spacings. In this work, an experimental approach is used to quantitatively determine the solidification thermal variables. The work also focuses on the dependence of dendrite arm spacings on these solidification thermal variables. The experimental data concerning the solidification of Al 5, 7 and 9 wt.% Si alloys are compared with the main predictive dendritic models from the literature. A comparison between upward and downward unsteady-state results for dendritic spacings has also been conducted. (c) 2005 Elsevier B.V. All rights reserved.
dc.description403
dc.description41671
dc.description228
dc.description238
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.subjectdownward transient solidification
dc.subjectprimary, secondary and tertiary dendrite arm spacings
dc.subjectdendritic growth models
dc.subjectAl-Si alloys
dc.subjectPb-sb Alloys
dc.subjectUnsteady-state
dc.subjectHeat-flow
dc.subjectSn-pb
dc.subjectInterdendritic Convection
dc.subjectMetallic Alloys
dc.subjectBinary-alloys
dc.subjectArm Spacings
dc.subjectCu Alloys
dc.subjectGrowth
dc.titleThermosolutal convective effects on dendritic array spacings in downward transient directional solidification of Al-Si alloys
dc.typeArtículos de revistas


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