Influence of Welding Parameters on Weld Formation and Microstructure of Dual-Laser Beams Welded T-Joint of Aluminum Alloy

Table 3

Influence of BOF on the width of upper/down fillet weld leg and welding process (welding parameters: P_CO2=7.8 KW, υ = 4 m/min).

BOF (mm)	Upper fillet weld leg width (mm)	Down fillet weld leg width (mm)	Ration of upper/down weld leg width	Welding process
0	1.55	2.29	0.67	Unstable
0.5	2.28	2.25	1.01	Stable
1.0	2.03	1.50	1.35	Stable