The interaction parameters of alloying elements on nitrogen in liquid Fe-Cr alloys containing niobium have been determined. The equilibrium nitrogen solubility in the liquid iron alloy was measured by metal-gas equilibrium technique under 0.04 to 1.0 atm of nitrogen atmosphere at 1 823 to 1 923K. Nitrogen solubility in Fe-Cr-Nb melts obeyed Sieverts' taw for all compositions studied in present study. The results obtained are summarized as follows; (1) The solubility of nitrogen markedly increased with increasing chromium and niobium. The interaction parameters in liquid iron alloys containing 10-18 % of Cr and 0.2-2 % of Nb are obtained. (2) The solubility of nitrogen was lower at a higher temperature in Fe-Cr melts in this study. (3) Test results indicated that it is not likely to form niobium nitride in Fe-Cr-Nb-N alloys and it was con-firmed by EDS.
CITATION STYLE
Lee, S. B., Jung, M. C., Song, H., & Rhee, C. H. (2002). Effect of niobium on nitrogen solubility in high chromium steel. ISIJ International, 42(6), 603–608. https://doi.org/10.2355/isijinternational.42.603
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