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1、SimulationofMicrostructureEvolutionusingMICRESSPhaseFieldSoftwareACCESSe.V.,RWTHAachen,GermanyOutlineIntroductionApplications:PhaseTransformationsinSteel(Fe-Mn-C)EutecticSolidification(Al-Ag-Cu)NickelBaseAlloysLaserRecrystallisationofa-SiliconTheoreticalBackgroundMICRESSSimulatio
2、nSoftwareConclusionandOutlookObjectivesofPhaseFieldModellingMainobjectivesModellingofdiffusioncontroledphasetransformationsPredictionofmicrostructureparametersCalculationofmicrosegregationInvestigationofgrowth/ripeningphenomenaUnderconsiderationofComplexmorphologiesThermodynamics
3、ofmulticomponentalloysMulticomponentdiffusionPhysicsBehindmicrostructureformation=thermodynamicsinterfaces(energyscale)(lengthscale)transport/diffusion(timescale)++TQinterfacefromTCSdiffusionsolverphasefieldmethodMICRESSApplication:Application:EutecticSolidificationEutecticSolidi
4、ficationEutecticFibresNiAl-Wbinarymodele.g.M.Apeletal.,JournalofCrystalGrowth237-239(2002)p.154-158LamellarEutecticGrowth:TernaryalloyAl-Ag-Cutiltedaxisymmetric0.40.50.30.20.1[Ag]Stackingsequencenewdegreeoffreedome.g.M.Apel,B.Böttger,I.Steinbach,ModellingofCasting,WeldingandAdvan
5、cedSolidificationProcessesX,TMS,20033DFibrousGrowthinAl-Ag-CuAgAlsolid/iquidinterface24phaseequilibriuma-AlrealstructureAlCu235µm"2002cuttingedge"ofsingleCPUcomputersApplications:Applications:PhaseTransformationsinSteelSolidificationPhaseTransformationsinSteelSolidificationApplic
6、ationsforSteelsDendriticSolidificationLÖdPeritecticTransformationL+dÖgGrainGrowth/RecrystallisationgAustenite-FerriteTransformationgÖaGrainGrowth/RecrystallisationaPeritecticDendritesinFe-Mn-CCMnliquidd-Ferriteg-Austenite300mmFe1at%C1at%Mn,200K/cm,1K/sFe-Mn-CGrainSelectioncarbonm
7、anganeseliquid/ferrite/austenitee.g.H.Diepers,J.Eiken,I.Steinbach,ModellingofCasting,WeldingandAdvancedSolidificationProcessesX,TMS,2003PeritecticSolidificationgmulticomponentsteel(x24)25µmphasefieldsimulationofbinaryFeCmulticomponentsteel(x48)fromFredriksson:e.g.J.Tiaden,Journal
8、ofCrystalGrowth198/199Mechanismofperitec
