Investigating the effect of friction stir welding parameters on the mechanical and metallurgical properties of the weld zone Aluminum-based composite materials

Currently, aluminum is widely used in various industries due to its low density and good corrosion resistance. In this research, the simulation of the effect of friction stir welding process on the mechanical strength of aluminum sheet with aluminum multilayer background and carbon fiber or glass composite with aluminum background is discussed. First, the aluminum sheet in specific dimensions with Ensys finite element software for dam simulation. Then, friction stir welding was performed on aluminum alloy using one of the research parameters such as speed or penetration depth of the tool. According to the results of the research, when the pin starts moving, the amount of stress applied to the plate decreases. Therefore, reducing the speed of the linear movement of the pin and increasing its rotational speed makes the friction stir welding process go through a better process, and when the pin moves, the displacement of the plate particles decreases. By examining the particles, it was seen that the movement of the pin along the plate creates a turbulent area in the plate. It has been observed that with the application of stress by the pin, the particles in the HAZ area are also displaced and enter from the upper surface of the welding area and exit from the lower surface according to the direction of movement. It was observed that the aluminum composite participates favorably in the friction stir welding process and the part is not damaged in this process.