Correlation between porosity and processing parameters in TiAl6V4 produced by selective laser melting

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Fatigue and fracture behaviour of laser powder bed fusion stainless steel 316L: Influence of processing parameters (2017, background): “mass transfer phenomenon where large spherical defects with ribbed surface can be generated due to the turbulent melt pool [45].”
Porosity evolution and its thermodynamic mechanism of randomly packed powder-bed during selective laser melting of Inconel 718 alloy (2017, background): “formation, which significantly affected the anisotropy in mechanical performance and the attendant processing integration [7].”
A Review of Metal Additive Manufacturing Technologies (2018, background): “The SLM process parameters such as scanning parameters, scanning strategies, and laser melting parameters exhibited a strong influence on the surface quality [76], voids characteristics [77], microstructure [78], and mechanical properties [75, 79] of TiAl6V4 parts.”
3D printing of Aluminium alloys: Additive Manufacturing of Aluminium alloys using selective laser melting (2019, background): “This information can be very useful during material qualification, as the types of pores and their locations can be related to the process parameters [32,262,263], thus providing a guidance for parameters optimisation.”