Effect of Chromium on Nitrogen Solubility in Liquid Fe–Cr Alloys Containing 30 mass% Cr

The nitrogen solubility in liquid Fe–Cr alloys has been measured by the gas–liquid metal equilibration technique in the temperature range from 1873 to 1973 K. The nitrogen dissolution follows the Siverts' law for liquid Fe–Cr alloys containing chromium up to 30 mass%. Chromium increased the nit...

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Bibliographic Details
Published inISIJ International Vol. 49; no. 11; pp. 1668 - 1672
Main Authors Kim, Wan-Yi, Lee, Chang-Oh, Yun, Chul-Wook, Pak, Jong-Jin
Format Journal Article
LanguageEnglish
Published Tokyo The Iron and Steel Institute of Japan 01.01.2009
Iron and Steel Institute of Japan
Subjects
Applied sciences
chromium
Exact sciences and technology
Fe–Cr alloy
interaction parameters
Metals. Metallurgy
nitrogen
nitrogen solubility
chromium
Chromium alloy
Solubility
nitrogen solubility
Fe-Cr alloy
Liquid alloy
Nitrogen
interaction parameters
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Summary:The nitrogen solubility in liquid Fe–Cr alloys has been measured by the gas–liquid metal equilibration technique in the temperature range from 1873 to 1973 K. The nitrogen dissolution follows the Siverts' law for liquid Fe–Cr alloys containing chromium up to 30 mass%. Chromium increased the nitrogen solubility linearly at Cr content less than 3 mass%, and the second-order effect of Cr on nitrogen solubility was apparent at higher Cr content. Using Wagner's formalism, the first- and second-order interaction parameters between chromium and nitrogen were determined from the equilibrium relation between chromium and nitrogen contents in liquid Fe–Cr–N alloys as a function of temperature: [Equation]
ISSN:0915-1559
1347-5460
DOI:10.2355/isijinternational.49.1668