Status and Prospect of Research on Laser Additive Manufacturing Path Planning for Metallic Materials

Laser additive manufacturing technology can shape arbitrarily complex parts and is widely used in aerospace,automotive,marine,medical apparatus,and other fields. Depending on the powder delivery method,laser additive manufacturing technology can be divided into selective laser melting technology with pre-positioned powder lay down in the powder bed and laser directed energy deposition technology with simultaneous powder delivery in the powder feeder. Path planning is an essential step in the laser additive manufacturing process. When different path strategies are used,the part forming quality and the mechanical properties can vary greatly,even if the hardware equipment and process parameters remain consistent. Many scholars have conducted extensive research on path planning strategies for different targets. This paper summarizes the current research status of laser additive manufacturing path planning. lt compares and analyzes the path planning strategies for two goals:improving the forming quality and mechanical properties. Finally,future research on laser additive manufacturing path planning is prospected to provide a direction for further research. © 2024 Cailiao Daobaoshe/ Materials Review. All rights reserved.