Welding of wrought aluminum alloys with fusion and solid-state process. Video reviews crack susceptibility during fusion welding of aluminum alloys, and methods to reduce cracking by proper selection of filler alloys. Filler alloys can be added as filler alloy, and can also be used in form of base metals. Techniques such as resistance welding, ultrasonic welding, and friction welding can also be used for welding wrought alloys.