Reaction behavior of MgO refractory with high-Mn and high-Al steel  

作　　者：Ling-zhong Kong Lin Zu Jie Yang Xi-min Zang Xin Yang Ming Kang 

机构地区：[1]School of Materials and Metallurgy,University of Science and Technology Liaoning,Anshan 114051,Liaoning,China

出　　处：《Journal of Iron and Steel Research International》2024年第6期1389-1398,共10页

基　　金：the support of the National Natural Science Foundation of China(Grant Nos.52274337 and 52174317)。

摘　　要：To understand the mechanism of the interfacial reaction between high-Mn and high-Al steel and MgO refractory,a series of laboratory experiments as well as thermodynamic calculations were performed.The effects of Mn and Al contents in the steel and the reaction time on the interfacial reaction were investigated.It was observed that the erosion of the MgO refractory is caused by the reaction of Al and Mn in the steel with MgO in the refractory,which would lead to the formation of(Mn,Mg)O·Al_(2)O_(3) spinel and(Mn,Mg)O solid solution.The formation mechanism of the spinel and solid solution is as follows.The Al in the steel firstly reacts with MgO in the refractory to generate MgO·Al_(2)O_(3) spinel,and then,the spinel reacts with Mn in the steel to form(Mn,Mg)O·Al_(2)O_(3) spinel.Finally,the MnO in the spinel reacts with the MgO in the inner refractory to form(Mn,Mg)O solid solution.In addition,only(Mn,Mg)O·Al_(2)O_(3) spinel is present in the interfacial reaction layer of the refractory when the Al content in the steel is sufficient.

关 键 词：High-Mn high-Al steel MgO refractory Reaction behavior Spinel 

分 类 号：TG1[金属学及工艺—金属学]