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Fig6

Surface relief in Fe-0.16C-0.26Si-0.96Mn-0.11Cr-0.12Ni-0.02Mo wt% sample, following laser surface-treatment at 10 mm/s, which resulted in partial austenitisation. The sample here is away from the centerline of the laser track. The regions of pearlite which transformed into austenite in the heating cycle, changed into martensite during cooling, resulting in surface displacements. The remainder of the microstructure is ferrite. Hardness 220 HV