The composition evolution and deformation of different non-metallic inclusions in a bearing steel during hot rolling were investigated by the automatic detection and the improved non-aqueous electrolysis method.Manganese sulfide,MnS-TiN,and liquid CaO-Al2O3 inclusions were elongated while TiN and MgO·Al2O3 were fractured during hot rolling.The CaS-MnS phase in the MgO-Al2O3-CaS-MnS inclusion was separated from the inclusion,leading to the formation of CaS-MnS type clusters.Meanwhile,the CaS and MnS contents in oxide-containing inclusions decreased while the MgO and A12O3 contents increased after hot rolling.The deformability of different inclusions in the bearing steel was quantitatively compared and discussed.

School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China;Steelmaking Plant,Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia,China;Engineering Technology Co.,Ltd.,WISDRI Engineering and Research Incorporation Limited,Wuhan 430223,Hubei,China;School of Mechanical and Materials Engineering,North China University of Technology,Beijing 100144,China;School of Materials and Metallurgy,University of Science and Technology Liaoning,Anshan 114051,Liaoning,China

[1]Nan Liu;Gong Cheng;Li-feng Zhang;Wen Yang;Ying Ren;Guo-cheng Wang;Xiao-ming Liu-.Composition evolution and deformation of different non-metallic inclusions in a bearing steel during hot rolling)[J].钢铁研究学报（英文版）,2022(04):552-562

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