Simulation of temperature field during direct-electrified heating for linear friction welded joint

The heat treatment of TC4 alloy linear friction welded joint by direct-electrified heating was simulated using the ABAQUS software. The temperature fields with different currents and the temperature variation at the characteristic points were obtained and analyzed. In order to verify the exactness of the calculation, electric heat treatment was conducted under the power supply of spot welding machine. During heat treatment, the variation of surface temperature was measured via infrared thermodetector. Comparing the calculations with experiments, it is found that the calculation results are in good agreement with the experiments, which means that the model can accurately predict the temperature field during electric heat treatment and provide basis for choosing reasonable parameters of electric heat treatment.