Laser Beam Welding of AA5052, AA5083, and AA6061 Aluminum Alloys

Table 3

Effect of welding speed on cracking of welded joints made without backing strip.

Alloy	Welding speed mm/min
	3	4	5	6
AA5052	O	O	X	X
AA5083	O	O	X	X
AA6061	O	X	X	X

O No weld crack, X Weld crack exist.