Investigations on decreased high temperature ductility of different continuously cast steel grades
Continuous casting of premium steel grades requires a process with a high degree of precision and the knowledge about the mechanical behavior of the steel at temperatures above 800 °C. This paper deals with several origins of effects which lead to unwanted impairment of the hot strand shell like segregations, size, amount, kind and distribution of precipitates as well as porosities from a metallurgical point of view. The systematic description of potential defect reasons helps to predict harmful operation parameters in context with the chemical composition of steel grades. A compilation of results from experiments at Department of Ferrous Metallurgy of RWTH Aachen University is complemented by a literature review. It is focused on the high temperature ductility and the underlying mechanisms inside the solidifying steel. Finally, potential measures to adjust the continuous casting process in order to prevent defects are elaborated.
This article is protected by copyright. All rights reserved.
Publisher URL: https://onlinelibrary.wiley.com/doi/10.1002/srin.202100323
DOI: 10.1002/srin.202100323
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