Analysis of cracking phenomena in continuous casting of 1Cr13 stainless steel billets with final electromagnetic stirring  

作　　者：Yu Xu Rong-jun Xu Zheng-jie Fan Cheng-bin Li An-yuan Deng En-gang Wang 

机构地区：[1]Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University [2]Research Institute, Baoshan Iron & Steel Co., Ltd.

出　　处：《International Journal of Minerals,Metallurgy and Materials》2016年第5期534-541,共8页矿物冶金与材料学报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (No. 50834009);the Key Project of the Ministry of Education of China (No. 311014);the 111 Project of China (No. B07015)

摘　　要：Solidification cracking that occurs during continuous casting of 1Cr13 stainless steel was investigated with and without final elec- tromagnetic stirring （F-EMS）. The results show that cracks initiates and propagates along the grain boundaries where the elements of carbon and sulfur are enriched. The final stirrer should be appropriately placed at a location that is 7.5 m away from the meniscus, and the appropri- ate thickness of the liquid core in the stirring zone is 50 ram. As a stirring current of 250 A is imposed, it can promote colurnnar-equiaxed transition, decrease the secondary dendrite arm spacing, and reduce the segregation of both carbon and sulfur. F-EMS can effectively de- crease the amount of cracks in 1Cr13 stainless steel.Solidification cracking that occurs during continuous casting of 1Cr13 stainless steel was investigated with and without final elec- tromagnetic stirring （F-EMS）. The results show that cracks initiates and propagates along the grain boundaries where the elements of carbon and sulfur are enriched. The final stirrer should be appropriately placed at a location that is 7.5 m away from the meniscus, and the appropri- ate thickness of the liquid core in the stirring zone is 50 ram. As a stirring current of 250 A is imposed, it can promote colurnnar-equiaxed transition, decrease the secondary dendrite arm spacing, and reduce the segregation of both carbon and sulfur. F-EMS can effectively de- crease the amount of cracks in 1Cr13 stainless steel.

关 键 词：stainless steel CRACKING solidification continuous casting electromagnetic stirring 

分 类 号：TG249.7[金属学及工艺—铸造] TG142.71[一般工业技术—材料科学与工程]