Exploring the interaction of alloying elements in modelling T0, Bs and Ms temperatures

Thermodynamic [Formula: see text] temperatures have been analysed for various Fe systems with additions of C, Mn, Si, Cr, Mo, Ni and Al. The findings indicate that the additivity rule is inadequate to accurately describe [Formula: see text] of ternary and higher order systems. To address this issue, a novel method accounting for the interaction of alloying elements was introduced and validated using 860 data points. The study also explored the interaction of alloying elements in modelling [Formula: see text] and [Formula: see text] temperatures, but no conclusive evidence was found due to high uncertainty in the experimental data. The models developed based on the additivity rule can accurately describe [Formula: see text] and [Formula: see text] for a wide range of alloying concentrations, demonstrating a significant improvement compared to benchmark models.