Dynamic Wetting of High-Al Steel by CaO-SiO{sub 2}- and CaO-Al{sub 2}O{sub 3}-Based Mold Fluxes
- University of New South Wales, School of Materials Science and Engineering (Australia)
- Tohoku University, Department of Metallurgy (Japan)
- Baosteel Group Corporation Research Institute (China)
Wetting of steel by mold fluxes affects the surface quality of steel products. Reaction between [Al] and mold fluxes in the continuous casting of high-Al steel leads to a dynamic interfacial phenomenon. This work investigated the wetting of the high-Al steel substrate by CaO-SiO{sub 2}-based and CaO-Al{sub 2}O{sub 3}-based mold fluxes. The interfacial tensions were estimated and related to their high-temperature structures. The interface morphology revealed that CaO-SiO{sub 2}-based mold flux and CaO-Al{sub 2}O{sub 3}-based mold flux with CaO/Al{sub 2}O{sub 3} = 1 exhibited deep reaction zones in the steel substrates and irregular flux/steel interfaces, while CaO-Al{sub 2}O{sub 3}-based mold fluxes with CaO/Al{sub 2}O{sub 3} = 2 and 3 showed smooth interfaces and superficial reaction zones. The sedation of dynamic wetting behavior in Samples 3 and 4 was related to the high viscosity in the flux droplet after the initial composition change, which led to the stabilization of the interface.
- OSTI ID:
- 22933467
- Journal Information:
- Metallurgical and Materials Transactions. B, Process Metallurgy and Materials Processing Science, Journal Name: Metallurgical and Materials Transactions. B, Process Metallurgy and Materials Processing Science Journal Issue: 5 Vol. 50; ISSN MTBSEO; ISSN 1073-5615
- Country of Publication:
- United States
- Language:
- English
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