OBRABOTKAMETALLOV TECHNOLOGY Vol. 26 No. 1 2024 Porosity values determined from a photograph of the structure of a specimen obtained by SLM from a composition of powders under the following SLM mode: P = 90 W; V = 225 mm/s; S = 0.08 mm; h = 0.025 mm; T = 25 C° 0.04 0.01 0.02 0.06 0.01 0.02 0.05 0.04 0.03 The average porosity value is 0.03 %, the energy density is E = 200 J/mm3 Fig. 5 shows SEM images and elemental mapping of the specimens produced from the mixed aluminum, magnesium and silicon powders. The distribution maps of aluminum, magnesium and silicon show that the elements in the matrix are distributed uniformly over the entire surface of the specimens. As a result of the study of the elemental composition, it was revealed that the elements in the specimen are distributed as follows: aluminum – 90.5 wt. % and 91 at. %, silicon – 7.8 wt. % and 8 at. %, magnesium – 1.7 wt. % and 1 at. %.
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