Solute Migration Behavior and Microstructure Evolution During Metal Solidification under High Magnetic Field

Author of the article:ZHOU Tianru1,2, LIU Tie1 , YAN Jinge1,2, SUN Jinmei1,3, YUAN Shuang2 , WANG Qiang1

Author's Workplace：1. Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, Shenyang 110819, China; 2. School of Metallurgy, Northeastern University, Shenyang 110819, China; 3. School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China

Key Words：high magnetic field; gradient magnetic field; solute migration; solidification microstructure; constitutional supercooling

Abstract：The solidification process is an important step in preparation of metal materials and plays a decisive role in the final properties of metal materials. Melt flow, solute migration and the evolution of solid-liquid interface morphology are important phenomena in the solidification process. The solute migration behavior in the solidification process of alloy melt determines the crystal growth and the formation of solidification structure. Effectively regulating solute migration can change the morphology of solid/liquid interface and reshape the solidification structure. In this paper, the solute migration and microstructure evolution during metal solidification under strong magnetic field is reviewed, the action mechanism of various effects of strong magnetic field is analyzed, the specific effects of strong magnetic field on solute migration behavior and microstructure evolution is introduced, and the development direction of functional material preparation is also proposed.