767260.fig.005a
(a)
767260.fig.005b
(b)
767260.fig.005c
(c)
767260.fig.005d
(d)
767260.fig.005e
(e)
Figure 5: Macrographs of the weld seams obtained using different laser power of CO2 laser (fixed welding parameter: υ = 4 m/min). (a) 6.8 KW, (b) 7.2 KW, (c) 7.5 KW, (d) 7.8 KW, and (e) 8.0 KW.