Study on Crystal Orientation of Metallic Materials During Solidification in High Magnetic Field

Author of the article:SUN Ke1,2, SUO Yusong1,2, LI Lei1,2, CUI Jianzhong1,2

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

Key Words：high magnetic fields; metallic materials; solidification process; crystal orientation

Abstract：In recent years, the application of steady-state high magnetic fields (HMFs) in the solidification process of metallic materials has received extensive attention. When the crystal with magnetic crystal anisotropy is parallel to the magnetic field with different crystal axes, it will undergo different magnetization energies. Under the induced magnetic torque, it will rotate until the magnetization energy drops to the lowest state, thus forming the preferred orientation. The formation of preferred orientation usually leads to the anisotropy of material properties, which can meet the needs of special properties of materials. Therefore, crystal orientation is one of the key research directions in the field of high magnetic field materials science. In this paper, the basic principle of preferred crystal orientation under strong magnetic field is introduced, and the research progress of crystal orientation under strong magnetic field is reviewed in combination with the solidification characteristics of eutectic and peritectic alloys. For eutectic alloys, the primary phase and the eutectic phase with the same primary phase may simultaneously form the preferred orientation under high magnetic field. For peritectic alloys, there is usually a specific orientation relationship between primary phase and peritectic phase under strong magnetic field. If they have similar crystal structure and easy magnetization axis, the orientation behavior will promote each other. If there is a big difference between the crystal structure and the easy axis of magnetization, there will be a competitive relationship in the orientation process, which will affect the orientation behavior of each.