Defect Formation Mechanisms in Selective Laser Melting: A Review

Chinese Journal of Mechanical Engineering

Qian Bai¹  Yongtao Li¹  Bi Zhang² 

[1]Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology, 116024, Dalian, China

[2]Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology, 116024, Dalian, China

[3]Department of Mechanical Engineering, University of Connecticut, 06269, Storrs, CT, USA

关键词: Selective laser melting;    Process parameters;    Defect;    Mechanical properties;   

DOI  :  10.1007/s10033-017-0121-5

来源: Springer

【 摘 要 】

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.

【 授权许可】

Unknown