ISSN1006-7167CN31-1707/TRESEARCHANDEXPLORATIONINLABORATORY第42卷第1期Vol.42No.12023年1月Jan.2023DOI:10.19927/j.cnki.syyt.2023.01.0412205双相不锈钢连铸坯凝固组织热模拟实验设计陈湘茹1,赵龙1,余海峰2,3,翟启杰1(1.上海大学材料科学与工程学院先进凝固技术中心,上海200444;2.宝山钢铁股份有限公司,上海201900;3.中国宝武中央研究院不锈钢研发中心,上海200126)摘要:为探索提高2205双相不锈钢铸坯质量的途径和方法,设计了2205双相不锈钢连铸坯凝固组织的模拟实验,从而为2205双相不锈钢连铸参数的优化提供基础。通过连铸坯的凝固热模拟装置进行实验设计,并借助金相显微镜研究2205双相不锈钢连铸过程凝固组织转变,发现模拟样品的显微组织与2205双相不锈钢连铸板坯的显微组织相同,说明模拟实验设计可靠。在此基础上,发现搅拌强度可以改善2205双相不锈钢连铸过程凝固组织缺陷和细化晶粒,为进一步深入研究对流强度对2205双相不锈钢连铸板坯的影响机制提供前期准备。关键词:双相不锈钢;连铸板坯;强制对流;凝固;晶粒细化;热模拟中图分类号:TF4文献标志码:A文章编号:1006-7167(2023)01-0208-04DesignofThermalSimulationExperimentforSolidificationStructureof2205DuplexStainlessSteelContinuousCastingSlabCHENXiangru1,ZHAOLong1,YUHaifeng2,3,ZHAIQijie1(1.CenterforAdvancedSolidificationTechnology(CAST),SchoolofMaterialsScienceandEngineering,ShanghaiUniversity,Shanghai200444,China;2.BaoshanIronandSteelCo.,Ltd.,Shanghai201900,China;3.StainlesssteelR&DCenter,ChinaBaowuCentralResearchInstitute,Shanghai200126,China)Abstract:Inordertoimprovethequalityof2205duplexstainlesssteelcontinuouscastingslab,experimentsaredesignedtosimulatethesolidificationstructureof2205duplexstainlesssteelcontinuouscastingslab,soastoprovideabasisfortheoptimizationofsubsequent2205duplexstainlesssteelcontinuouscastingparameters.Theexperimentaldesigniscarriedoutthroughthesolidificationthermalsimulationdeviceofcontinuouscastingslab,andthesolidificationstructuretransformationof2205duplexstainlesssteelcontinuouscastingprocessisstudiedwiththehelpofmetallographicmicroscope.Itisfoundthatthemicrostructureofthesimulatedsampleisthesameas...