OBRABOTKAMETALLOV MATERIAL SCIENCE Vol. 26 No. 2 2024 The evaluation of the quality of a single laser track was conducted according to the following criteria: – the track shape coefficient f h f L = , where h is the height of the track above the substrate; L is the width of the track (Fig. 2); Fig. 1. X-ray diffraction pattern of the initial powder Ta b l e 1 Chemical composition of the experimental powder Mass fraction of chemical elements, % Ti Al V Mo Cr Fe O H N C bal. 4.8 4.5 2.6 1.2 0.4 0.12 0.004 0.018 0.03 Ta b l e 2 LENS modes Powder feed rate 10 g/min Ar gas supply coaxial – 10 l/min transport – 3.5 l/min shield – 20 l/min Nozzle height above surface 9 mm Laser spot diameter 1,800 μm Laser power 700…1.300 W, step 100 W Scanning speed 600…1.000 mm/min, step 200 mm/min
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