PSI - Issue 5

Hirotaka Tanabe et al. / Procedia Structural Integrity 5 (2017) 1005–1010 H Tanabe et al. / Structural Integrity Procedia 00 (2017) 000 – 000

1008

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Fig. 3. Schematic illustration of hardness measurement area of cross-sectional surface

a

840W 900W 800W

1000 1200

0 200 400 600 800 Vickers hardness, HV

-3 -2 -1 0

1

2

3

Distance from center, mm

b

1000 1200

840W 900W 800W

0 200 400 600 800 Vickers hardness, HV

0

0.1 0.2 0.3 0.4 0.5

Distance from surface, mm

Fig. 4. Hardness distribution on the cross-sectional surface of the laser quenched specimen.

(a) Width direction (Depth = 50  m); (b) Depth direction