期刊
ISIJ INTERNATIONAL
卷 49, 期 11, 页码 1668-1672出版社
IRON STEEL INST JAPAN KEIDANREN KAIKAN
DOI: 10.2355/isijinternational.49.1668
关键词
nitrogen solubility; Fe-Cr alloy; nitrogen; chromium; interaction parameters
资金
- Ministry of Knowledge Economy, Republic of Korea
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 1 973 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: log f(N)(Cr) = (- 147.8/T+0.019)center dot[%Cr]+(-2.58/T+0.0021)center dot[%Cr](2) (0
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