朱江波, 宋智芳, 方磊, et al. A Study on Thermodynamic Model for Rare Earth Element Existence in Clean Heavy Rail Steel[J]. Special Steel, 2009, 30(2): 13-14.DOI:
A coupling thermodynamic model to quantitatively describe elements segregation and inclusions precipitation during solidifcation process of clean RE heavy rail steel has been established
and according to the analysis on literature data
the model has higher precision.The effect of RE adding amount on law of precipitation of inclusions and RE elements existence state in clean steel has been analyzed by the model. It is obtained that the MnS and Al
2
O
3
inclusions in steel can be modifed by adding RE elements in clean heavy rail steel; the RE oxysulfide(or RE aluminate)first precipitates in steel
then RE sulfide and last RE nitride; and with adding same RE elements amount
the lanthanum solute content is larger than the cerium solute content.