ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Regular Article
Thermodynamic Interaction between Chromium and Titanium in Liquid Fe–Cr Alloys Containing 30 mass% Cr
Jong-Oh JoWan-Yi KimChang-Oh LeeJong-Jin Pak
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2010 Volume 50 Issue 10 Pages 1373-1379

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Abstract

Thermodynamic interaction of chromium on titanium in liquid Fe–Cr alloys was studied by measuring the effect of chromium on the solubility product of TiN in liquid Fe–Cr–Ti–N alloys by the metal–nitride–gas equilibration technique in the temperature range from 1873 to 1973 K. Titanium nitride formed in the melt was identified as a pure solid stoichiometric TiN. As the chromium content increases in the melt saturated with TiN, the critical nitrogen solubility increases significantly, while the titanium solubility decreases. Using Wagner's formalism, the present results were thermodynamically analyzed to determine the first- and the second-order interaction parameters between chromium and titanium given as follows.
eTiCr = 406.7/T−0.1933  rTiCr = −20.6/T−0.011  (0 < mass% Cr < 30)

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© 2010 by The Iron and Steel Institute of Japan
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