Microstructural development in Al-Sn alloys directionally solidified under transient heat flow conditions

dc.creatorCruz, KS
dc.creatorSpinelli, JE
dc.creatorFerreira, LL
dc.creatorCheung, N
dc.creatorGarcia, A
dc.date2008
dc.dateMAY 15
dc.date2014-11-17T08:42:00Z
dc.date2015-11-26T17:16:29Z
dc.date2014-11-17T08:42:00Z
dc.date2015-11-26T17:16:29Z
dc.date.accessioned2018-03-29T00:04:40Z
dc.date.available2018-03-29T00:04:40Z
dc.identifierMaterials Chemistry And Physics. Elsevier Science Sa, v. 109, n. 1, n. 87, n. 98, 2008.
dc.identifier0254-0584
dc.identifierWOS:000255083100016
dc.identifier10.1016/j.matchemphys.2007.10.037
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/56836
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/56836
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/56836
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1282295
dc.descriptionDespite the wide use of Al-Sn alloys for engineering applications studies on the microstructural development of such materials are rare. Optimized microstructures during the solidification stage of processing can be fundamental for final properties. In the present study, three Al-Sn hypoeutectic alloys were directionally vertically solidified under upward unsteady state heat flow conditions. Primary (XI) and secondary (; 2) dendrite arm spacings were measured along the alloys castings and correlated with transient solidification thermal variables. A combined theoretical and experimental approach has been used to quantitatively determine such thermal variables, i.e., transient metal/mold heat transfer coefficients, tip growth rates, thermal gradients, tip cooling rates and local solidification time. The article also focuses on the dependence of dendrite arm spacings on the alloy solute content. Furthermore, the experimental data concerning the solidification of Al 20, 30 and 40 wt% Sn alloys are compared with the main predictive dendritic models from the literature. (c) 2007 Elsevier B.V. All rights reserved.
dc.description109
dc.description1
dc.description87
dc.description98
dc.languageen
dc.publisherElsevier Science Sa
dc.publisherLausanne
dc.publisherSuíça
dc.relationMaterials Chemistry And Physics
dc.relationMater. Chem. Phys.
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectalloys
dc.subjectsolidification
dc.subjectmicrostructure
dc.subjectcomputer modelling and simulation
dc.subjectUnsteady-state Solidification
dc.subjectAluminum-tin Alloys
dc.subjectMechanical-properties
dc.subjectEquiaxed Transition
dc.subjectThermal Parameters
dc.subjectDendrite Spacings
dc.subjectBinary-alloys
dc.subjectSi Alloys
dc.subjectPb Alloys
dc.subjectCu Alloys
dc.titleMicrostructural development in Al-Sn alloys directionally solidified under transient heat flow conditions
dc.typeArtículos de revistas


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