OBRABOTKAMETALLOV MATERIAL SCIENCE Vol. 26 No. 2 2024 Fig. 4. Dependence of microhardness of single tracks on laser power for different scanning speeds Ta b l e 4 Laser deposition modes selected according to the shape of a single track Scanning speed V, mm/min 700 800 900 1.000 1.100 1.200 1.300 Laser power P, W 800 1.000 1.000 1.000 1.000 1.000 800 Fig. 5. Structure of monolayers obtained by the LENS method with a scanning speed of 1.000 mm/min, power of 1.000 W and different distances between tracks: a – 0.5L; b – 0.7L; c – 0.9L a b c fact that with a track spacing of 0.5L, the forming molten pool captures more material from the neighboring solidified track, which may lead to an increase in the proportion of dispersed powder on it. In other words, these dependencies indicate that the powder material is absorbed to a greater extent with a track spacing of 0.7L. It is also worth noting that when the laser power exceeds 1.000 W at a scanning speed of 1.000 mm/min, an increase in the porosity of the monolayers is observed.
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