C-Cr-Fe-Si四元熔體組元活度研究.pdf

1、上海大學(xué)碩士學(xué)位論文CCrFeSi四元熔體組元活度研究姓名：高瑞峰申請學(xué)位級別：碩士專業(yè)：鋼鐵冶金指導(dǎo)教師：蔣國昌鄭少波20030801上海大學(xué)碩士學(xué)位論文ABSTRACTTheSELF—SReMmodelbelongstothehighordersub—regularsolutionmodelItsystemizesthecomponentsactivitiesformulti—componentmetalliquidandthewh

2、olehomogeneousregioninmetallurgicalslag，andprovidesareliableactivi母databankofcomponentsforthermodynamicpredictionofengineeringParametersAj蛔wereusedtodescribetheexcessthermodynamicpropertiesinSELFSReM，ActivitiesofcarbonmC

3、CrFemeltf187315K)andactivitiesofsiliconinC—Si—Cr—Femelt(187315K1weremeasuredbyelectromotiveforcemethodinthisdissertationNewvalueswereoptimizedforternaryC—CrFe，C—SiFeandquaternaryCSiCrFeinteractionparameterofliquidphasean

4、dparametersAjk’AjkmapplyingevaluatedexperimentalmeasurementsonsoluteactivitiesandphaseequilibriaOptimizationresultsofthisdissertationimprovedthecorrelationbetweenexperimentsandcalcuiationsobtainedinearlierassessmentsThel

5、ocationofthe‘‘LiquidCr3C2(CrFe)TC3”threephaseregioninC—CrFeisothermalsection(187315K、hasbeeninvestigatedbymeansofopticalmicroscopyandelectronprobemicroanalysisApplyingsupportvectorregression(SVR)，newvaluesWel“eoptimizedf

6、orMnSiinteractionparametersofliquidphasetOimprovethecorrelationbetweenexperimentsandealculationsKEYWORDSthermodynamics，CSiCrFe，activitySELF—SReM，RedlichKisterMuggianu，phaseequilibrium，electromotiveforcesupportvectorregre