Computer Simulation of Deformation Behavior of Non-metallic Inclusion in Hot-rolling

Recently it is required that non-metallic inclusion, which is fracture origin in forming process, should be harmless because ductility of high strength steel must be ensured. Non-metallic inclusion is observed in the form of composite inclusion. In this study, the influences of flow stress ratio of inclusion versus matrix steel and composite inclusion ratio on deformation behavior of inclusion were investigated analytically. It was found that the aspect ratio of inclusion would be determined by flow stress ratio and composite inclusion ratio. The result indicated that the aspect ratio of inclusion after compression could be estimated by average flow stress ratio and composite inclusion ratio.