（1.Key Laboratory of Micro-Systems and Micro-Microstructures Manufacturing of Ministry of Education, Harbin Institute of Technology, Harbin 150080, China）（2.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China）
The introduction of reinforcements such as fibers, particles, and whiskers was revealed as an effective method for enhancing the mechanical properties of metal matrix composites. With the rapid development of the modern industry and science technology, higher requirements for multifunctional materials have been put forward. With aim to supply future demand from energy and national defense fields, a novel material system consisting of alternating nanoscale layers was designed and prepared, named metallic nanolamellar composites. Metallic nanolamellar composites has been a promising strategy to improve the comprehensive properties of materials, which can ensure its service life under extreme conditions such as high temperature and irradiation. Compared with traditional metal composites, metallic nanolamellar composites have very high interface density, which can effectively prevent dislocation movement and strengthen the material. In addition, the heterogeneous interface promotes the absorption and annihilation of irradiated defects, which effectively reduces the irradiation damage. Therefore, metallic nanolamellar composites are expected to become a new generation of super radiation resistant materials, and have important application prospects in advanced nuclear reactors such as fast reactor and fusion reactor. In recent years, metallic nanolamellar composites have been extensively and deeply researched, and significant progress has been made in their preparation technology, structural characterization and comprehensive performance research. Taking Cu/Nb nanolamellar composites as an example, recent research progress on preparation technology, deformation behavior, thermal stability, radiation resistance, as well as electrical conductivity of nanolaminate composites are reviewed. The development trend and application prospect of metallic nanolamellar composites are briefly discussed.