A coupled model of TiN inclusion growth in GCr15SiMn during solidification in the electroslag remelting process
来源期刊：International Journal of Minerals Metallurgy and Materials2015年第12期
论文作者：Liang Yang Guo-guang Cheng Shi-jian Li Min Zhao Gui-ping Feng Tao Li
文章页码：1266 - 1272
摘 要：TiN inclusions observed in an ingot produced by electroslag remelting（ESR） are extremely harmful to GCr15 SiM n steel. Therefore, accurate predictions of the growth size of these inclusions during steel solidification are significant for clean ESR ingot production. On the basis of our previous work, a coupled model of solute microsegregation and TiN inclusion growth during solidification has been established. The results demonstrate that compared to a non-coupled model, the coupled model predictions of the size of TiN inclusions are in good agreement with experimental results using scanning electron microscopy with energy disperse spectroscopy（SEM-EDS）. Because of high cooling rate, the sizes of TiN inclusions in the edge area of the ingots are relatively small compared to the sizes in the center area. During the ESR process, controlling the content of Ti in the steel is a feasible and effective method of decreasing the sizes of TiN inclusions.
Liang Yang1，Guo-guang Cheng1，Shi-jian Li1，Min Zhao2，Gui-ping Feng2，Tao Li2
1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing2. Dongbei Special Steel Group
摘 要：TiN inclusions observed in an ingot produced by electroslag remelting（ESR） are extremely harmful to GCr15 SiM n steel. Therefore, accurate predictions of the growth size of these inclusions during steel solidification are significant for clean ESR ingot production. On the basis of our previous work, a coupled model of solute microsegregation and TiN inclusion growth during solidification has been established. The results demonstrate that compared to a non-coupled model, the coupled model predictions of the size of TiN inclusions are in good agreement with experimental results using scanning electron microscopy with energy disperse spectroscopy（SEM-EDS）. Because of high cooling rate, the sizes of TiN inclusions in the edge area of the ingots are relatively small compared to the sizes in the center area. During the ESR process, controlling the content of Ti in the steel is a feasible and effective method of decreasing the sizes of TiN inclusions.
关键词：
