Interfacial Reaction Between CaO-SiO 2 -MgO-Al 2 O 3 Flux and Fe- x Mn- y Al ( x = 10 and 20 mass pct, y = 1, 3, and 6 mass pct) Steel at 1873 K (1600 °C)

摘要: This study investigated the interfacial reaction kinetics and related phenomena between CaO-SiO2-MgO-Al2O3 flux Fe-xMn-yAl (x = 10 20 mass pct, y 1, 3, 6 pct) steel, which simulates transformation-induced plasticity (TRIP) twinning-induced (TWIP) steels at 1873 K (1600 °C). It also examines effect of changes in composition steel slag phases on rate mechanisms. The content Al Si 1 pct Al-containing was found to change rapidly within first 15 minutes reaction, but then it remained relatively constant. 3 steels, contrast, changed continuously throughout entire time. In addition, Mn initially decreased with increasing time, did not steels. Furthermore, transfer coefficient Al, kAl, systems significantly higher than that other systems; i.e., kAl can be arranged such >> ≥ systems. compositions final slags were close saturation lines [Mg,Mn]Al2O4 MgAl2O4 spinels when reacted respectively. These results, show phenomena, explained by significant increase apparent viscosity likely caused precipitation solid compounds as spinel CaAl4O7 grossite locally alumina-enriched areas phase. analysis is good accordance combination Higbie’s surface renewal model Eyring equation.