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| Composition evolution and deformation of different non-metallic inclusions in a bearing steel during hot rolling |
| Nan Liu1,2, Gong Cheng3, Li-feng Zhang4, Wen Yang1, Ying Ren1, Guo-cheng Wang5, Xiao-ming Liu1 |
| 1 School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083, China 2 Steelmaking Plant, Baotou Steel Union Co., Ltd.,Baotou 014010, Inner Mongolia, China3 Engineering Technology Co., Ltd., WISDRI Engineering and Research Incorporation Limited, Wuhan 430223, Hubei,China4 School of Mechanical and Materials Engineering, North China University of Technology, Beijing 100144, China5 School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China |
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Abstract 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 Al2O3 contents increased after hot rolling. The deformability of different inclusions in the bearing steel was quantitatively compared and discussed.
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| Cite this article: |
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Nan Liu,Gong Cheng,Li-feng Zhang, et al. Composition evolution and deformation of different non-metallic inclusions in a bearing steel during hot rolling[J]. Journal of Iron and Steel Research International, 2022, 29(4): 552-562.
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2022, Vol. 29 
