高能束流焊接接头组织性能研究现状

Due to the advantages of small deformation, high energy density and welding efficiency, the high⁃energy beam welding technology has played an important role in aerospace, rail transportation and other advanced manu⁃ facturing fields. The existing study shows that the high⁃energy beam welding could realize high⁃quality joining of similar / dissimilar materials, such as superalloy, titanium alloy, high⁃entropy alloy, aluminum alloy and others. The development and physical process of two representative technologies, electron beam welding and laser welding, are briefly introduced. The study on the microstructure feature and mechanical property as well as the effect of the post⁃ weld heat treatment for the two processes are mainly discussed.