Donghua Dai1,2, Dongdong Gu1,2,*, Qing Ge1,2, Chenglong Ma1,2, Xinyu Shi1,2, Han Zhang1,2
CMES-Computer Modeling in Engineering & Sciences, Vol.124, No.3, pp. 1085-1098, 2020, DOI:10.32604/cmes.2020.010927
Abstract The three-dimensional physical model of the randomly packed powder
material irradiated by the laser beam was established, taking into account the
transformation of the material phase, the melt spreading and the interaction of
the free surface of the molten pool and the recoiling pressure caused by the material evaporation during the selective laser melting. Influence of the processing
parameters on the thermal behavior, the material evaporation, the surface morphology and the densification behavior in the connection region of the molten
pool and the substrate was studied. It was shown that the powder material underwent the transformation from the partial melting… More >
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