Progress in Research of the Assistance of Static Magnetic Field on Metal Additive Manufacturing
As a new type of material processing technology,additive manufacturing has many advantages,such as short manufacturing cycle,high material utilization rate and ability of processing complex structures,etc.This technology performs a rapid development trend in aspects of equipment,materials,processes,standards,etc.,especially in high-end manufac-turing fields such as aerospace,showing great application prospects.However,the mechanism of microstructure forming and defect evolution during metallic additive manufacturing is still unclear,which greatly restricts the large-scale application of additive manufacturing technology.As an external auxiliary means,the external physical energy field can directly affect the physical change and chemical reaction process of the metal part preparation.The application of a static external magnetic field in the additive manufacturing process can affect the solidification process of the microscale melt pool,microstructure and mechanical properties.The basic effects of static magnetic field on the metallic solidification,the microstructure and mechanical properties during additive manufacturing were described.The research progress in the field of static magnetic field assisted additive manufacturing was reviewed from the perspective of materials,methods and applications.In addition,the challenges faced by static magnetic field assisted additive manufacturing were pointed out and the future development trend was discussed.
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