ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Regular Article
Effect of Carbon on Nitrogen Solubility and AlN Formation in High Al Alloyed Liquid Steels
Jung-Mock JangSeok-Hyo SeoYoung-Dae KimHyo-Jong AnJong-Jin Pak
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2014 Volume 54 Issue 7 Pages 1578-1583

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Abstract

The nitrogen solubility and the AlN solubility product in liquid Fe–C–Al–N alloys containing a wide composition range of carbon and aluminum were measured in the temperature range of 1773–1873 K. Aluminum and carbon both decreased the nitrogen solubility in liquid iron. The simultaneous effect of aluminum and carbon on nitrogen solubility in liquid iron was determined. The AlN solubility product in liquid iron decreased significantly with carbon addition primarily due to the large effect of carbon on nitrogen solubility. Using the Wagner’s formalism, the experimental results were thermodynamically analyzed to determine the interaction parameters among carbon, aluminum and nitrogen in liquid iron as follows:

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© 2014 by The Iron and Steel Institute of Japan
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