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The 6082 aluminium alloy is widely used for the automotive parts that work under the conditions of dynamic and cyclic stress, but the selection of proper production parameters is most challenging task to get excellent result. Physical simulation of HAZ helps in identifying suitable welding parameters like linear heat input, voltage, current etc. In this paper, the influence of weld heat cycle on heat affected zone (HAZ) is simulated for Tungsten Inert Gas Welding (TIG) using Gleeble 3500 thermomechanical simulator, automotive aluminium alloy (AA6082-T6) plate of thickness 1 mm. Investigation of HAZ softening were performed by means of hardness measurement on the simulated specimens. Different peak temperatures and linear heat input were selected, and physical simulation performed using Rykalin-2D model (thin plate). Experimental works included physical simulation and Vickers hardness tests.

Investigation of HAZ softening of AA6082-T6 automotive aluminium alloy by physical simulation