Advances in polishing of internal structures on parts made by laser-based powder bed fusion  

作　　者：Mingyue SHEN Fengzhou FANG 

机构地区：[1]Centre of Micro/Nano Manufacturing Technology,University College Dublin,Dublin 4,Ireland [2]State Key Laboratory of Precision Measuring Technology and Instruments,Laboratory of Micro/Nano Manufacturing Technology,Tianjin University,Tianjin 300072,China

出　　处：《Frontiers of Mechanical Engineering》2023年第1期93-114,共22页机械工程前沿（英文版）

摘　　要：The internal structures of metallic products are important in realizing functional applications.Considering the manufacturing of inner structures,laser-based powder bed fusion(L-PBF)is an attractive approach because its layering principle enables the fabrication of parts with customized interior structures.However,the inferior surface quality of L-PBF components hinders its productization progress seriously.In this article,process,basic forms,and applications relevant to L-PBF internal structures are reviewed comprehensively.The causes of poor surface quality and differences in the microstructure and property of the surface features of L-PBF inner structures are presented to provide a perspective of their surface characteristics.Various polishing technologies for L-PBF components with inner structures are presented,whereas their strengths and weaknesses are summarized along with a discussion on the challenges and prospects for improving the interior surface quality of L-PBF parts.

关 键 词：laser-based powder bed fusion POLISHING internal structures surface quality surface features post process additive manufacturing 

分 类 号：TG14[一般工业技术—材料科学与工程]