Solubility of Nitrogen in Fe-Cr-Ni-Mo Stainless Steel
Solubility of nitrogen in liquid Fe-Cr-Ni-Mo stainless steel was measured in the temperature range from 1723 to 1923 K under a N2 gas of 1 atm.As a result,the solubility increased with increasing Cr,Mo and Mn content,whilst it decreased with increasing Ni content.In addition,the solubility increased with decreasing temperature.Thermodynamic analysis was carried out taking Fe-20 mass% Cr alloy.The first attempt showed that the calculated solubility,applying the reported first-order interaction coefficients of N against Cr,Ni,Mo and Mn,did not agree with the measured values.This inconsistency was found to be attributed to the interaction coefficient of N against Ni ( Fe20Cr Ni eN ).Therefore,this value available up to 30 mass% Ni has been reassessed.Thereby the corresponding coefficient was derived as 0.0063 with which the solubility could be well predicted.
stainless steel super austenitic stainless steel nitrogen solubility equilibrium
KOBAYASHI Yusuke TODOROKI Hidekazu SHIGA Natsuki ISHII Teruaki
Nippon Yakin Kogyo Co.,Ltd.,4-2 Kojima-cho,Kawasaki-ku,Kawasaki,Kanagawa 210-8558 Japan
国际会议
Asia Steel International conference 2012(第五届亚洲钢铁大会)
北京
英文
1-4
2012-09-23（万方平台首次上网日期，不代表论文的发表时间）