In-situ observation and analysis of solidified structure evolution of S50C steel in soaking furnace
作者机构：School of Metallurgical and Ecological EngineeringUniversity of Science and Technology BeijingBeijing 100083China Institute of Iron and Steel TechnologyTU Bergakademie FreibergFreiberg 09599Germany Department of Metallurgical ProcessResearch Institute of Technology of Shougang Group Co.Ltd.Beijing 100043China Jiuquan Iron and Steel(Group)Co.Ltd.Jiayuguan 735100GansuChina
出 版 物：《Journal of Iron and Steel Research International》 (Journal of Iron and Steel Research, International)
年 卷 期：2023年第30卷第10期
页 面：1963-1973页
核心收录：
学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）]
基 金：The authors would like to thank the National Natural Science Foundation of China(No.62071034) the management of Jiuquan Iron and Steel(Group)Co.,Ltd.,China for the financial support and giving permission to publish this work
主 题：Compact strip production process Solidified structure evolution Carbon diffusivity Inverse problem method
摘 要：The evolution of solidified structure of S50C steel during heat treatment in compact strip production process was studied through an ultra-high-temperature confocal scanning laser *** was found that the solidified structure consisted of dendritic crystals with secondary dendrite arm spacing ranging in 32-120μm,where carbon segregation was evident,and the dendrite arms wereα-*** insignificant change was observed at a soaking temperature of 1180℃,whereas at 1300℃,the finer structure firstly disappeared,and then,the coarsening decreased,indicating that carbon tended to be ***,the microsegregation was improved at 1300℃for 15 *** phase transformation ofα-Fe→γ-Fe enhanced the carbon diffusion,and the evolution of the equivalent radius req was controlled by carbon *** diffusion coefficient of carbon(D=15μm2/s)was determined by using the inverse problem method.
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