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Thermodynamic Relation between Aluminum and Titanium in Liquid iron

Title
Thermodynamic Relation between Aluminum and Titanium in Liquid iron
Author
박종진
Keywords
liquid iron; aluminum; titanium; interaction parameters
Issue Date
2008-01
Publisher
IRON STEEL INST JAPAN KEIDANREN KAIKAN
Citation
ISIJ INTERNATIONAL, v. 48, No. 1, Page. 17-22
Abstract
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.
URI
https://www.jstage.jst.go.jp/article/isijinternational/48/1/48_1_17/_article/-char/ja/https://repository.hanyang.ac.kr/handle/20.500.11754/104277
ISSN
0915-1559
DOI
10.2355/isijinternational.48.17
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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