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2024 | OriginalPaper | Chapter

Study on Secondary Phase Precipitation Behavior of Ship Plate Steel Slab Under Different Cooling Rates in Continuous Casting Process

Authors : Huisheng Wang, Qing Liu, Biao Tao, Jun Wu, Ming Li, Min Guan, Weili Huang

Published in: TMS 2024 153rd Annual Meeting & Exhibition Supplemental Proceedings

Publisher: Springer Nature Switzerland

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Abstract

The blank surface quality could be prevented through the control of the second phase precipitation. In this study, the precipitation behavior of carbon-nitrides was studied by a high-temperature confocal laser scanning microscope under the cooling rates of 0.1, 0.5, 1.0, 3.0, and 5.0 ℃/s. And the effects of cooling rate on the morphology and distribution of precipitates were obtained. The results show that the initial precipitation temperature and “fast-growing region” of carbon-nitrides are varied under different cooling rates. As the cooling rate increases, the nucleation location of carbon-nitrides changes from grain boundary to grain interior. Meanwhile, its size and quantity gradually decrease. When the cooling rate is larger than 1 ℃/s, the carbon-nitride mainly precipitates in grain interior. Combining the above research, a new secondary cooling method for ship plate steel slab is proposed and industrial tests are conducted, which improves the surface quality of the slab in continuous casting.

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Title: Study on Secondary Phase Precipitation Behavior of Ship Plate Steel Slab Under Different Cooling Rates in Continuous Casting Process
Authors: Huisheng Wang
Qing Liu
Biao Tao
Jun Wu
Ming Li
Min Guan
Weili Huang
Publisher: Springer Nature Switzerland
Book: TMS 2024 153rd Annual Meeting & Exhibition Supplemental Proceedings
Print ISBN: 978-3-031-50348-1

Electronic ISBN: 978-3-031-50349-8

Copyright Year: 2024
DOI: https://doi.org/10.1007/978-3-031-50349-8_96

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