双辊连铸薄带凝固组织模拟的微观模型.pdf

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1、RareMetalMaterialsandEngineeringAvailableonlineatv~／vw．sciencedirect．comVolume42，Issue1，Janua~2013OnlineEnglisheditionoftheChineselanguagejournaLScienceDirectMicromodeIofSimulationonTWin—RolIContinuousCastingThinStripSolidificationStructureChenShoudong，ChenJingchaoKeyLabo

2、ratoryofAdvanceMaterialofRarePreciousandNonferrousMetals，EducationMinistryofChina，KunmingUniversityofScienceandTechnology，Kunming650093，ChinaAbstract：Basedontheresearchonthesolidificationoftwin—rollcontinuouscastingaluminumalloythinstrip，theanalyticalmode1ofheterogeneousn

3、ucleation．thegrowthkineticsoftip(KGT)andcolumnardendritetransformationtoequiaxeddendrite(CET)oftwin—rollcontinuouscastingaluminumalloythinstripsolidificationareestablishedbymeansoftheprincipleofmetalsolidification．Meantimebasedonthecellularautomaton(CA)．theemulationalmode

4、loftwin—ro11continuouscastingaluminurealloythinstripsolidificationisestablished．Thefoundationfortheemulationalsimulationoftwin—rol1continuouscastingthinstripsolidificationstructureislaid．Last．thenumerica1simulationcanprovidesometheoreticalguidancefortwin—rollcontinuouscas

5、tingthinstrip．Meanwhileithasconfirmedthemathematicalsimulationfeasibilitybythesolidificationprocessoftwin—rollcontinuouscastingaluminumalloythinstripKeywords：twin—rollcontinuouscasting；solidificationstructure；emulationalsimulation；micro—model；validationThestripcastingproc

6、esshasbeenresearchedandonitsproperties．Therefore．tofindoutthedisciplinesdevelopedovertheyears．Amongthevariousstripcastingofmicrostructureformationintwin—rollcontinuouscastingprocessesappliedtosteelmaking，thetwin—rollstripisaneconomicalandfeasiblewaytooptimizethccontinuous

7、castingisregardedasthemostprospectiveparametersofcastingprocessandtogethighqualitystriptechnologyofnear—net—shapecasting．Twin—rollstripbythecalculationandpredictionofcastingprocess．Incontinuouscastingmaysaveenergyandmanufacturingcostordertoclarifytheformingmechanismofsoli

8、dificationbyeliminatingsomeoftheintermediatestages．structurezonefortwin—rollcontinuouscastingthi