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During the electroslag remelting (ESR) with steel containing active alloying elements, the macrosegregation of aluminum, titanium and silicon content along the axial direction of ingot has not been resolved well till today.1,2) Not only the reactions among Al+Al2O3, Si+SiO2 and Ti+TiO2 systems but also the oxidation reactions caused by ferrous oxide, influence the alloying element content, which makes the active alloying element control difficultly. Therefore, it is particularly urgent to provide reliable active alloying element in ingot control technology based on thermodynamic and kinetic analysis during the ESR process. Until today, research on the macrosegregation of aluminum, titanium and silicon in stainless steel with high titanium and low aluminum content during the ESR process is still continuing, and thermodynamic study of the subject3–9) and reports on the modeling of the chemical reactions occurring during ESR process10,11) have been published. Hou3,4) studied the effect of slag on titanium, silicon and aluminum content in superalloy based on slag-metal interaction experiment in a resistant furnace, and illustrated that the CaO has large effect on the activities of Al2O3, TiO2 and SiO2 based on thermodynamics. Cheng6) investigated the relationship between titanium and aluminum Effect of Slag Composition on the Oxidation Kinetics of Alloying Elements during Electroslag Remelting of Stainless Steel: Part-2 Control of Titanium and Aluminum Content

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Effect of Slag Composition on the Oxidation Kinetics of Alloying Elements during Electroslag Remelting of Stainless Steel: Part-2 Control of Titanium and Aluminum Content