Thermodynamic Assessment of Liquid Mn-Fe-C System by Unified Interaction Parameter Model.

Thermodynamic Assessment of Liquid Mn–Fe–Si–C–Ca–P System by Unified Interaction Parameter Model

“…During the reducing de-P process, Mn-Fe-Si-CCa-P system is always involved, however, the activity calculation of this system cannot be completed by the current model. [73][74][75][76] In the present paper, UIPM was extended to the Mn-Fe-Si-C-Ca-P system by considering all relevant experimental data in the literatures.…”

“…Generally, Fe-Mn melts were treated as an approximately ideal solution all over the composition range. 35,69,[74][75][76][77] However, it seemed likely that Fe-Mn solutions might show slight non-ideality from the viewpoint of the release of 3d electrons for valence bonding.…”

“…and Mn-Fe-Si-C 76) systems. In the works of Lee 74) and Li et al, 76) Fe and Mn were assumed to form ideal solutions. Following this assumption, both the activity coefficients of Mn and Fe will be unit for all the compositions in Mn-Fe system.…”

“…This model can also reduce to Wagner's formalism at infinite dilution and to Darken's quadratic formalism in dilute solutions. Some works has been done to optimize the UIPM parameters for Mn-Si, 73) Mn-Fe-C, 74) Mn-Fe-C-N 75) and Mn-Fe-Si-C 76) system. During the reducing de-P process, Mn-Fe-Si-CCa-P system is always involved, however, the activity calculation of this system cannot be completed by the current model.…”