Laser Welding Aluminium Alloy 5083

In this work samples of aluminium alloys 5083 t0 and 6082 t6 have been welded under conduction regime using a high power diode laser.

Laser welding aluminium alloy 5083. Aa5083 and aa6013 are welded by the tungsten inert gas welding method with two different electrodes alsi12 alsi5 and six different sample parameters have been obtained as 5083 alsi12 5083. Laser welding of aluminium alloy 5083 p okon g dearden k watkins m sharp p french laser group department of engineering university of liverpool brownlow street liverpool l69 3gh united kingdom lairdside laser engineering centre birkenhead wirral united kingdom abstract there are two laser welding mechanisms keyhole mode and conduction mode. Conduction welds are usually produced using low power focused laser beams. In this work high power co2 and yag lasers have been used to produce laser conduction welds on 2mm and 3mm gauge aa5083 respectively by means of defocused beams.

Aa5083 is strengthened by a solid solution of magnesium in the aluminum matrix as most of 5000 series alloys. Full penetration butt welds of 2mm and 3mm gauge aa5083 using this process have been produced. This results in shallow welds with a low aspect ratio. The material for experimental welding was non heat treatable wrought aluminum alloy 5083 o o designates annealed state heat treatment method of thickness of 5 mm.