Thermodynamic Relation between Aluminum and Titanium in Liquid iron
- Thermodynamic Relation between Aluminum and Titanium in Liquid iron
- liquid iron; aluminum; titanium; interaction parameters
- Issue Date
- IRON STEEL INST JAPAN KEIDANREN KAIKAN
- ISIJ INTERNATIONAL, v. 48, No. 1, Page. 17-22
- Thermodynamic relation between aluminum and titanium in liquid iron was studied using the metal-nitride-gas equilibration technique. The effect of aluminum on the solubility product of TiN in liquid iron was measured under different nitrogen partial pressures in the temperature range of 1 843-1 973 K. The experimental results were thermodynamically analyzed using Wagner's interaction parameter formalism to determine the first-order interaction parameters of aluminum and titanium in liquid iron as follows.
e(Ti)(Al)=1 939/T-1.009, e(Al)(Ti)= 1 092/T-0.568
Using thermodynamic data determined in present study, a stability diagram for Al2O3, Ti2O3 and Ti3O5 phases was constructed as a function of dissolved aluminum, titanium and oxygen contents in liquid iron. The result indicated that at equilibrium condition titanium oxides would not form on titanium addition in Al-killed liquid steels with soluble aluminum content of 0.02-0.05 mass% at 1 873 K.
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- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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