Research Progress on Evolution of Precipitate Phases in Steel under High Magnetic Field

Author of the article:ZHANG Dong1,2, HOU Tingping1,2, ZHENG Yihang1,2, FENG Yong1,2, WU Kaiming1,2

Author's Workplace：1. State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China; 2. Hubei Collaborative Innovation Center for Advanced Steels, Wuhan University of Science and Technology, Wuhan 430081, China

Key Words：Steel; high magnetic field; solid-state phase transformation; precipitation

Abstract：Carbide is the main precipitated phase in steel, and precipitated strengthening can effectively improve the strength and toughness of steel. High magnetic field has been widely used in the field of materials as an important means to regulate the microstructure (including carbides) in steel. At present, some achievements have been made on the evolution mechanism of structure, magnetism and stability of complex carbides in steel under high magnetic field. In this paper, the evolution of precipitates is reviewed, with emphasis on the evolution of structure, magnetism and stability of carbides under conventional conditions and high magnetic field. The evolution of carbide precipitation induced by magnetic field was analyzed from the perspectives of dynamics and thermodynamics, and the effect of carbide on the mechanical properties of materials under strong magnetic field is discussed. Finally, the problems in the process of phase precipitation controlled by high magnetic field are discussed and the future development direction is prospected.