Research Progress on Forming Mechanism and Control Strategies of Metallurgical Defects by Laser Additive Manufacturing Metal Components
This paper introduces the principle,technical characteristics,and applicable metal material system of laser additive manufacturing.The forming mechanism and influencing factors of common metallurgical defects were summarized,and corresponding control strategies were proposed according to the forming mechanism.The related research progress of the metallurgical defects treatment in the additive manufacturing was described from process parameters optimization and posttreatment.The direction of process parameters optimization and postprocessing optimization was clarified.The future development trend and research direction of laser additive manufacturing were prospected.
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