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Fig7

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 is located at 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 296 HV