Fig. 9: Visualization of porosity appearing inside the molten material in the beginning of the laser scanning with power 15.5 W.
From: Operando tomographic microscopy during laser-based powder bed fusion of alumina
The upper image of each time frame shows volume rendering of a cropped volume indicated by the pink frame in Fig. 8a with a gray scale adjusted the way that powder is almost transparent, the solid and liquid phase are visible, but with transparency allowing to see the pores close to the surface. The bottom image of each frame shows only the material labeled as porosity. Dark green corresponds to porosity in the solid material of the previous layer, while other colors illustrate the pores in the liquid.
