AISTech 2022

Sessions Speakers Exhibitors Products Press Releases Show Specials Floor Plan Buzz

Slag-Based Nitrogen Removal From Third-Generation Advanced High-Strength Steel (Room 309)

Nitrogen removal by Al2O3-CaO-MgO-SiO2 slags (<15 wt.% SiO2) from third-generation advanced high-strength steel (AHSS) (at 1823 K, 1 atm) was studied with FactSage calculations and laboratory slag-steel reactions. The expected nitrogen distribution coefficient between slag and steel is in the range of 20-60. Nitrogen removal to these low-SiO2 slags occurs despite a relatively low nitride capacity, thanks to the highly reducing conditions bestowed by the high concentrations of dissolved Al, Si or both of these.