Mechanisms and characteristics of spatter generation in SLM processing and its effect on the properties

By Di Wang, Shibiao Wu, Fu Fan, Shuzhen Mai, Yong-qiang Yang, Yang Liu, Changhui Song. 2017

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Optimization and comparison of porosity rate measurement methods of Selective Laser Melted metallic parts (2019, background): “The size of the spatters, usually much larger than the powder grains (< 50 μm), can prevent the powder from spreading homogeneously around the spatter, thus increasing the risk of LOF [10,20].”
Review of defects in lattice structures manufactured by powder bed fusion (2019, background): “4 Examples of the defects which form in PBF processes: a porosity [51] (annotations from [18]), b incomplete fusion [52], c severe cracking causing delamination [53], d balling occurring at higher scanning speeds [54] and e spatter [55] Int J Adv Manuf Technol”
Experimental analysis of spatter generation and melt-pool behavior during the powder bed laser beam melting process (2018, background): “observations made by Wang et al. (2017), but near the melt-pool/ powder bed interface.”
Influence of SLM process parameters on the surface finish, porosity rate and fatigue behavior of as-built Inconel 625 parts (2017, methodology): “Spatter ejection, generated during the powder bed laser beam melting process, discussed in recent papers (Wang et al., 2017, Gunenthiram et al., 2018) could explain the origin of this kind of defect.”