Defect Formation Mechanisms in Selective Laser Melting: A Review
By Bi Zhang, Yongtao Li, Q. Bai. Chinese Journal of Mechanical Engineering, 2017
807 citations recorded by the source corpus.
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.
Subfields: Automotive Engineering, Industrial and Manufacturing Engineering, Mechanical Engineering
View Paper: https://www.semanticscholar.org/paper/f3e0f5269d9a5462c4ff1ef78cfc560e046cae47
How researchers see this paper
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In Automotive Engineering
- M. Laleh
- Xiaobing Feng
- Ifeanyichukwu Echeta
- Samanta Piano
- M. Moyle
- S. Primig
- Richard Leach
- B. Dutton
In Industrial and Manufacturing Engineering
In Mechanical Engineering
- M. Laleh
- Xiaobing Feng
- Ifeanyichukwu Echeta
- Samanta Piano
- M. Moyle
- S. Primig
- Richard Leach
- B. Dutton
Citations in the corpus
- Additive manufacturing of steels: a review of achievements and challenges (2020, background): “AM has made great progress over the past years in terms of producing high-density parts; however, defect formation remains a challenge [37].”
- Review of defects in lattice structures manufactured by powder bed fusion (2019, background): “Cracking is more likely to occur in materials such as stainless steels and nickel-based superalloys, due to their low thermal conductivity and high coefficient of thermal expansion [27].”
- Additive manufacturing of soft magnets for electrical machines—a review (2020, background): “For example, SLM-prepared samples suffered from cracking and poormechanical properties because of a large thermal gradient and defects such as porosity and incomplete fusion holes [133].”