Preparation Process Control and Device Development of Magnetostrictive Materials under Magnetic Field

Author of the article:DONG Meng1,2, LIU Yuan1,2, CHEN Xiang1,2

Author's Workplace：1. School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China; 2. Key Laboratory for Advanced Materials Processing Technology (Ministry of Education), Beijing 100084, China

Key Words：magnetic field; magnetostrictive materials; solidification; crystal orientation; transducer; ultrasonic guided wave nondestructive testing

Abstract：The development of magnetostrictive materials is a process in which new magnetic structures are constantly discovered, material preparation and modification methods are constantly improved, and magnetostrictive coefficient is constantly increased. Accordingly, magnetostrictive devices based on new magnetostrictive materials are emerging. As a kind of physical field, magnetic field is often used to optimize the microstructure and properties of materials. In this paper, the effects of the preparation process of magnetic field assisted materials on the microstructure and magnetostrictive properties of various magnetostrictive materials were reviewed. At the same time, various magnetostrictive devices based on magnetostrictive materials are introduced. According to the application scenarios, designing the output form of magnetostrictive devices and selecting the types of magnetostrictive materials have become an effective way to broaden the application fields of various magnetostrictive materials and devices.