The effects of alloying elements on the peritectic range of Fe–C–Mn–Si steels

摘要: The peritectic reactions, liquid + δ-(ferrite) → γ(austenite) and the related casting problems during fast manufacturing process remain a big challenge for compositional design commercial production of high-quality Fe–C–Mn–Si steels. precise prediction range composition in steel is important order to avoid failure rolling; however, effects alloying elements on are unclear not only due large space alloyed steels but also its occurrence at high-temperature ranges, > 1400 °C. A combination experimental measurements thermodynamic modeling was employed study wide ranges phase transformation sequences temperatures two model were evaluated by differential scanning calorimetry (DSC) in-situ confocal laser microscope (HT-CLSM) compared with calculation TCFE9 database. total number 1680 diagrams calculated varying Mn from 0.3 wt% 3.0 wt%, Si 0.05 2.95 without 0.02 Ti addition. Using linear regression analyses calculations, we have predicted correlation between These results effectively represented contour plots equations predict future outcomes practice their testing accuracy. It revealed that influenced complex elemental interactions, rather than single-element Mn, or Ti. widely-applied subject strict restriction reaction problems. This boundary condition topic current study.