Fig. 3
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Structure of tracks on a sample after laser treatment with a frequency of 10 kHz, a scanning speed of 200 mm/s, and 40 passes: (a) high-speed steel M2 with a power of 60%; (b) high-speed steel M2 with a power of 100%; (c) hard alloy coated with (TiAl)N with a power of 60%; (d) hard alloy coated with (TiAl)N with a power of 100%.
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