Investigation of crystal growth mechanism during selective laser melting and mechanical property characterization of 316L stainless steel parts

(a) Schematic diagram analyzing the growth direction of solidification front and preferred growth orientation of the gains; (b) velocity vector plots in the melt pool with the action of Marangoni effect in cross-section view. (ω = 125.00 J/mm3); (c) “layer-layer” melt pool boundary; (d) “track-track” melt pool boundary343