搅拌摩擦固相沉积增材制造研究现状

Additive friction stir deposition based on friction stir welding and additive manufacturing technology provides a unique solid processing route for metal additive manufacturing. It has the advantages of a wide range of applicable materials, fine comprehensive performance of components, high efficiency and low cost, and so on. It has broad application potential in aerospace, weapons and other fields in the manufacture of metal and metal base composite component. In view of the unique advantages of the additive friction stir deposition, the basic principle, the thermal deformation process with complete coupling and the macroscopic forming of the deposit layer are briefly introduced in this paper. The microstructure evolution and mechanical properties of the additive deposit layer are emphatically discussed. A large number of studies have shown that the unique solid phase forming in the additive friction stir deposition can produce the forged microstructure of the additive component. It has been gradually used in the manufacture, repair, coating and other fields. Finally, the prospect of additive friction stir deposition is presented. It is pointed out that further research and breakthrough should be made in the fields of simulation, manufacturing process, technology optimization, quality monitoring, complex component manufacture and so on.