Simulation of Temperature Field in FSW of 6061T6 Aluminum Alloy IGBT Liquid Cooled Radiator Panel

Heat input and temperature field distribution in the welding process are crucial to welding quality. The parameters in the FSW process are optimized to study the influence of the temperature field on a car Insulated Gate Bipolar Transistor(IGBT) liquid cooled radiator panel 6061T6 aluminum alloy under friction stir welding. This paper established the liquid cooled radiator panel with friction stir welding fully coupled thermo-mechanical model, and explored the thermal physical parameters of 6061T6 aluminum alloy based on JMATPRO. Then, the temperature field distribution rules of friction stir welding at the inlet of liquid cooling plate and the weld joint under different welding time are explored by using ABAQUS. The effects of different rotational and welding speeds on the temperature field of the welded joint are also studied. Results show that most of the heat in the FSW process is generated by the shaft shoulder of the tool, and the heat at the welding position is a conical shape. Under the assumption that other technological parameters remain unchanged, the rotational speed of the pin is the most important factor affecting the temperature field of the FSW process.