Abstract
Fe–Mn–Al–C steel can form AlN particles because of its high [Al] content (w[Al] = 8–12 wt%), which can affect the properties of slag during continuous casting. In this study, the dissolution behavior of AlN in a new CaO–Al2O3-based slag without SiO2 was investigated by a static experiment method. Results demonstrated AlN rod could be dissolved in the liquid slag and it only reacted with Li2O, which caused the increase of Al2O3 and the decrease of Li2O in the slag. The interface between slag and AlN was examined by scanning electron microscopy, and the products near the slag side were Al2O3–CaO–BaO–CaF2 complexes, while individual Al2O3 and AlN–Al2O3 complexes were dispersed near AlN side. Additionally, the viscosity and break temperature of the slag increased greatly with the increase of AlN. XRD showed the primary crystalline phase in the slag was 11CaO·7Al2O3·CaF2. This work provided theoretical guidance for future application of the slag for high-Al steel.
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Wang, X., **, Z., Wang, Q., He, S., Zhang, X. (2024). Dissolution Behavior of AlN in CaO–Al2O3-Based Slag. In: Wagstaff, S., Anderson, A., Sabau, A.S., Iloeje, C. (eds) Materials Processing Fundamentals 2024. TMS 2024. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-031-50184-5_5
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