The morphology of Al−Ti−O complex oxide inclusions formed in an ultra low-carbon steel melt during the RH process

Internal morphologies of bulk shape oxides in a melt of Ti bearing low-carbon steel were analyzed. The outer shapes of nearly spherical inclusions containing Ti were quite different from the shape of alumina inclusions that typically have a cluster form. A cross-section investigation using a polishing method and the FIB method revealed that the TiO^sub x^-Al^sub 2^O^sub 3^ complex oxide covers alumina clusters and that the interfaces of the alumina and complex oxide are modified as time passes.[PUBLICATION ABSTRACT]