Part and material properties in selective laser melting of metals

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An overview of powder granulometry on feedstock and part performance in the selective laser melting process (2017, background): “In fact, the most common surface defect also known as balling phenomenon is a result of melt pool breakages under high scanning speeds which generate discontinuous surfaces that obstruct coater movement and initiate porosity through non-uniform powder deposition [13,40].”
Selective laser melting of stainless steel 316L with low porosity and high build rates (2016, background): “Moreover, unlike the moulding process, the lack of mechanical pressure makes SLM process more prone to bonding cracks between different layers [14].”
Development of Micro Selective Laser Melting: The State of the Art and Future Perspectives (2019, background): “Since the resultant melt pool geometry significantly influences the microstructure features, the mechanical properties of the fabricated part differ from those of conventional processes [13].”
Investigation into the effect of process parameters on microstructural and physical properties of 316L stainless steel parts by selective laser melting (2014, methodology): “[1] investigated the effect of three different types of scan strategies on density in Ti6Al4V ALM manufactured parts.”