| Abstract Scope |
In this study, thermodynamic calculation methods were used. The effect of Al on the peritectic reaction and phase transition during solidification was investigated. The changes of solute partition coefficients of other elements in steel after adding Al are analyzed. A microscopic segregation model was established to calculate and discuss the effect of Al on solute elements in steel during solidification. The results show that by adding Al to the steel, Al has a large effect on the equilibrium partition coefficients of C, Si and S in the δ and γ phases, and a small effect on the equilibrium partition coefficients of Mn and P in the δ and γ phases. Al will increase solute segregation of C, Si, Mn, and P elements in peritectic steel. Al has the greatest impact on the segregation degree of C and P elements, followed by Si and Mn. |