Thermodynamic Research on the Precipitation of Ti₂O₃, TiN and TiC in Continuous Casting of Titanium Microalloyed Steel

Abstract The composite precipitation of Ti 2 O 3 + TiN during continuous casting has an important influence on the microstructure and properties slab. In order to study conditions , TiC second phase in titanium microalloyed steel, solid-liquid line temperature, initial temperature different phase, equilibrium actual solubility product at temperatures are calculated, rules steel liquid two-phase region analyzed. results show that: can precipitate molten is prior that TiN, while does not precipitate. Due enrichment Ti, O, C N solidification, reached when lower than 1469°C liquidus, begins stage solidification. When 1332°C, begins.