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A Review on Hot Tearing of Steels

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Abstract

Hot tearing is a common solidification defect in both continuous cast steels and foundry shaped castings, which has a significant impact on the quality of the final products. It is a complex phenomenon that involves both the thermal and mechanical conditions and chemical element segregation that evolves during casting process. Over several decades, much effort has been invested into improving our understanding of the conditions required for the occurrence of hot tearing and to relate these conditions with casting parameters, like casting speed in continuous cast process, alloy composition, cooling conditions, etc. This review summarizes the results from previous investigations that have focused on the hot tearing phenomenon of steels, including criteria for hot tearing, experimental methods, and several validated models for different testing methods. The factors that influence hot tearing sensitivity are also reviewed and discussed in the present work.

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Acknowledgement

The authors would like to thank Dr. Simon N. Lekakh for his technical advice and contribution within this manuscript. The present work is supported by Peaslee Steel Manufacturing Research Center (PSMRC) at Missouri University of Science and Technology (Missouri S&T). All the faculty and industry mentoring committee of the PSMRC are greatly acknowledged.

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  1. Peaslee Steel Manufacturing Research Center, Department of Materials Science and Engineering, Missouri University of Science and Technology, 1400 N Bishop Avenue, Rolla, MO, 65409-034, USA

    Yanru Lu, Laura N. Bartlett & Ronald J. O’Malley

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Lu, Y., Bartlett, L.N. & O’Malley, R.J. A Review on Hot Tearing of Steels. Inter Metalcast 16, 45–61 (2022). https://doi.org/10.1007/s40962-021-00599-3

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