State Key Laboratory of Advanced Special Steel;
Shanghai University;
Shanghai 200444;
China;
School of Materials Science and Engineering;
Shanghai University;
Shanghai 200444;
China;
Shenyang National Laboratory for Materials Science;
Institute of Metal Research;
Chinese Academy of Sciences;
Shenyang 110016;
China;
Inclusion motion; Inclusion removal; Electrode tip; MC-ESR; X-ray microtomography;