Release Time:2019-03-12  Hits:

Indexed by: Journal Article

Date of Publication: 2017-05-01

Journal: CHINESE JOURNAL OF MECHANICAL ENGINEERING

Included Journals: CSCD、EI、SCIE

Volume: 30

Issue: 3

Page Number: 515-527

ISSN: 1000-9345

Key Words: Selective laser melting; Process parameters; Defect; Mechanical properties

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.