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| A review on prediction of casting defects in steel ingots: from macrosegregation to multi-defect model |
| Jun Li1,2, Xiao-wei Xu1, Neng Ren1, Ming-xu Xia1,2, Jian-guo Li1 |
| 1 School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; 2 Shanghai Key Laboratory of Advanced High-Temperature Materials and Precision Forming, Shanghai 200240, China |
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Abstract Due to the nature of the solute redistribution, the reduction in the solidification rate with time in a square root relationship, and the multiphase melt flow during the solidification, casting defects such as macrosegregation, shrinkage cavity, and porosity will inevitably occur in the steel ingot and intensify with the increase in ingot size. These defects directly affect the performance of the final product and severely restrict the choice of subsequent thermal processing methods and process windows. Therefore, the solidification defects including macrosegregation, shrinkage/porosity, and inclusions encountered in the preparation of large steel ingots and their formation mechanisms were reviewed. The development progress and the latest development of the macrosegregation model for steel ingots were introduced in detail, especially the latest progress in the coupling prediction of macrosegregation and shrinkage as well as macrosegregation and inclusions. Some methods to reduce macrosegregation of ingots were discussed as well. Finally, a new casting method called layered casting was introduced in detail. This method can effectively improve the uniformity of the macrostructure and reduce the macrosegregation of the large ingots and therefore is a promising method for preparing large ingots with high homogeneity.
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| Cite this article: |
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Jun Li,Xiao-wei Xu,Neng Ren, et al. A review on prediction of casting defects in steel ingots: from macrosegregation to multi-defect model[J]. Journal of Iron and Steel Research International, 2022, 29(12): 1901-1914.
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| [1] |
Qi-peng Dong, Jiong-ming Zhang, Yan-bin Yin, Hiromi Nagaumi. Numerical simulation of macrosegregation in billet continuous casting influenced by electromagnetic stirring[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2022, 29(4): 612-627. |
| [2] |
Sheng Yu, Long-qiang Zhu, Jin-hu Lai, Ming-xu Pan, Yue-yun Liu, Wei-dong Xuan, Jiang Wang, Chuan-jun Li, Zhong-ming Ren. Application of heat absorption method to reduce macrosegregation during solidification of bearing steel ingot[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2022, 29(12): 1915-1926. |
| [3] |
Fan Zhang, Hong-gang Zhong, Yu-qian Yang, Ming-xu Pan, Ren-xing Li, Qi-jie Zhai. Improving ingot homogeneity by modified hot-top pulsed magneto-oscillation[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2022, 29(12): 1939-1950. |
| [4] |
Wen-bin Ma, Yao-hui Jin, Yu-an Jing, Wen-bin Li, Wei-da Yu, Guang-long Li, Wan-ming Li. An innovative process of clad teeming for preparing slab ingot[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2022, 29(12): 2006-2015. |
| [5] |
Dong-bin Jiang, Li-feng Zhang, Ya-dong Wang. Effect of mold electromagnetic stirring on solidification structure and solute segregation in continuous casting bloom[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2022, 29(01): 124-131. |
| [6] |
Tao Wang, En-gang Wang, Yves Delannoy, Yves Fautrelle, Olga Budenkova. Effect of vertical electromagnetic stirring on solute distribution in billet continuous casting process[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2022, 29(01): 132-143. |
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2022, Vol. 29 
