Abstract
The purpose of the work is to develop predictive models of thermophysical properties of chromium-containing ferroalloys. The Institute of Ferrous Metallurgy of the National Academy of Sciences of Ukraine conducts systematic studies of the physicochemical and thermophysical properties of ferroalloys with their modeling. With the use of the created "Ferrosplav" database, the article presents predictive models of thermophysical properties of chromium-containing ferroalloys for modeling the processes of interaction of ferroalloys with liquid steel. The physicochemical model of metal melt structuring is based on the use of interatomic interaction parameters. The metal melt is considered as a chemically unified system, and factor analysis with the generation of models of the optimal structure. Predictive models of thermophysical properties of chromium-containing ferroalloys were developed with an interval of 0.027–8.5% С and 29.2–72.7% Cr: Tsolidus, Tliquidus, ρ = f (d, ZY). The analysis of experimental data on the thermophysical properties of chromium-containing ferroalloys showed a close relationship with the parameters of interatomic interaction. The developed models make it possible to predict the effect of composition changes, expressed through integral parameters of interatomic interaction, on the properties of chromium-containing ferroalloys with an interval of 0.027-8.5% C and 29.2 – 72.7% Cr. They can be used to assess the properties of both a single grade and the entire range of chromium-containing ferroalloys.
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