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1、InternationalJournalofThermalSciences51(2012)145e154ContentslistsavailableatSciVerseScienceDirectInternationalJournalofThermalSciencesjournalhomepage:www.elsevier.com/locate/ijtsDesignofmechanicalpropertiesofAl-alloyschillcastingsbasedonthemetal/moldinterfacialheatt
2、ransfercoefficientabcde,*JoséE.Spinelli,NoéCheung,PedroR.Goulart,JoséM.V.Quaresma,AmauriGarciaaDepartmentofMaterialsEngineering,FederalUniversityofSãoCarlos,UFSCar,13565-905SãoCarlos,SP,BrazilbFederalInstituteofEducation,ScienceandTechnologyofSãoPaulo,IFSP,13872-551S
3、ãoJoãodaBoaVista,SP,BrazilcFederalInstituteofEducation,ScienceandTechnologyofSãoPaulo,IFSP,18202-000Itapetininga,SP,BrazildFederalUniversityofPará,UFPA,AugustoCorrea1,66075-110Belém,PA,BrazileDepartmentofMaterialsEngineering,UniversityofCampinas,UNICAMP,POBox6122,13
4、083-970Campinas,SP,BrazilarticleinfoabstractArticlehistory:Solidificationthermalparameterssuchasthegrowthrateandthecoolingratedependonthemetal/Received23February2011moldheattransferefficiency,usuallycharacterizedbyaninterfacialheattransfercoefficient,hi,andReceivedinre
5、visedformdeterminethearrangementofthesolidificationmicrostructure,includingitsmorphologyandscale.The5June2011mechanicalpropertiescanbecorrelatedwiththemicrostructuralparameterssuchasthecellularandAccepted22August2011dendriticspacingsandhencewiththeinstantaneousvalueo
6、fhi.Inthepresentinvestigation,itisshownAvailableonline13September2011thathivariesintimeaccordingtoanexpressionoftheformhi¼atm,wherem<0.5.Directionalsolidificationexperimentsarecarriedout,andinterrelationsofthermalparameters,microstructureandKeywords:tensilepropertie
7、sareestablished.LinearrelationshipsbetweentheultimatetensilestrengthandhihaveAluminumalloysCastingbeendeterminedforhypoeutecticAleFeandAleSnalloys.MicrostructureÓ2011ElsevierMassonSAS.Allrightsreserved.ThermalanalysisHeattransfercoefficient1.Introductionbeaffectedbyc
8、ertainthermalprocessparameters,i.e.,thegrowthrate,thethermalgradientandthecoolingrate,whicharesensitiveTheboundaryconditionsimposedattheme
