双辊连铸薄带凝固组织模拟的微观模型.pdf

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

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