（1．School of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China) （2．State Key Laboratory of Porous Metal Materials, Northwest Institute for Nonferrous Metal Research，Xi’an 710016, China）
Since the advent of the selective electron beam melting (SEBM) technology in the 1980s, it has been extensively studied in the preparation technology, forming materials and application fields for its high deposition efficiency, pollution-free, and high forming quality. At present, there are a lot of researches and applications in the fields of biomedicine, automobile industry, aerospace and so on. In this work, the SEBM technology and principle are first introduced. Secondly, it summarizes the research and progress of SEBM technology in the preparation of titanium-based alloys, iron-based alloys, aluminum-based alloys, copper-based alloys, nickel-based alloys and high entropy alloys, as well as the corresponding microstructure and mechanical properties in recent years. In addition, the application cases of SEBM technology in biomedicine, automotive industry and aerospace are listed. Finally, it summarizes and looks forward to the problems and future development of SEBM technology in the preparation of metal materials, which provides a reference for SEBM to prepare high-performance products.