494851.fig.003a
(a) 3 m/min
494851.fig.003b
(b) 2.1 m/min
494851.fig.003c
(c) 1.8 m/min
494851.fig.003d
(d) 1.2 m/min
Figure 3: Influence of welding speed on cross-section morphologies of welded seam. (  mm;  kW;  L/min).