Defect Formation Mechanisms in Selective Laser Melting: A Review
Bi Zhang, Yongtao Li, Qian Bai
Abstract
Abstract Defect formation is a common problem in selective laser melting (SLM). This paper provides a review of defect formation mechanisms in SLM. It summarizes the recent research outcomes on defect findings and classification, analyzes formation mechanisms of the common defects, such as porosities, incomplete fusion holes, and cracks. The paper discusses the effect of the process parameters on defect formation and the impact of defect formation on the mechanical properties of a fabricated part. Based on the discussion, the paper proposes strategies for defect suppression and control in SLM.
Topics & Concepts
Selective laser meltingFusionMaterials scienceProcess (computing)Computer scienceComposite materialMicrostructureLinguisticsOperating systemPhilosophyAdditive Manufacturing Materials and ProcessesAdditive Manufacturing and 3D Printing TechnologiesManufacturing Process and Optimization