Aluminum Deoxidation Equilibrium of Fe-Ni Alloy at 1773 K and 1873 K

Journal Article · Mon Oct 15 04:00:00 EDT 2018 · Metallurgical and Materials Transactions B, Process Metallurgy and Materials Processing Science

DOI:https://doi.org/10.1007/S11663-018-1336-2· OSTI ID:22857838

Fukaya, Hiroshi; Kajikawa, Koji ^[1]; Malfliet, Annelies; Blanpain, Bart; Guo, Muxing ^[2]

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1. The Japan Steel Works, Ltd., Muroran Research Laboratory (Japan)
2. KU Leuven, Department of Materials Engineering (Belgium)

The aluminum deoxidation equilibrium in molten Fe-36 mass pct Ni and Fe-46 mass pct Ni alloys was experimentally determined at 1773 K and 1873 K to obtain the thermodynamic parameters around the liquidus temperature, which is required to predict the deoxidation reaction for the ingot-casting process. Automatic SEM-EDS inclusion analysis was performed to estimate the undissolved oxygen content. Thermodynamic analysis on Al deoxidation was carried out using Miki and Hino’s formula, which is based on Darken’s quadratic formalism and the Redlich–Kister polynomial. From the composition dependence of the apparent equilibrium constant in Fe-Ni alloy, the necessity of the third-order interaction parameter of Ni-Al was found. Then, the interaction parameters of Fe-Al, Al-O and Ni-Al were evaluated.

• OSTI ID: 22857838
• 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. 49; ISSN 1073-5615; ISSN MTBSEO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM
CASTING
INTERACTIONS
IRON
IRON ALLOYS
NICKEL ALLOYS
POLYNOMIALS
REDUCTION
SCANNING ELECTRON MICROSCOPY
THERMODYNAMICS