Ostwald Ripening Behavior of Second-Phase Particles under High Magnetic Field

Author of the article:ZHANG Siyu1,2, WANG Kai1 , YAN Chaojie1,3, MIAO Peng1,3, LIU Tie1 , WANG Qiang1

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

Key Words：Ostwald ripening; second phase particles; influencing factors; high magnetic field

Abstract：The essence of Ostwald ripening is the reduction of interfacial energy and the long-range diffusion of solute atoms, which is the core problem of powder metallurgy, semi-solid processing, liquid phase sintering and inclusion control. The Ostwald ripening process is affected by many factors, such as volume fraction, alloy elements, elastic strain, original microstructure and external field, etc. In recent years, the application of high magnetic field has an important impact on the ripening process, but the mechanism needs to be further studied. In this paper, the effects of magnetic field on ripening are classified, the effects of phase transformation, diffusion and interface energy under high magnetic field are analyzed in detail, and the research progress of Ostwald ripening experiment under high magnetic field is also summarized.