Abstract: The serious softening phenomenon can be observed in the heat-affected zone of 6061-T6 aluminum alloy during the welding process in order to inhibit this welding defect, the aging softening zone of the welded joint was loaded by the rotation impact during the welding process. To illustrate the performance of the heat-affected zone of welded joints under different process parameters, the microstructure, hardness and corrosion resistance tests were carried out. The results show that the hardness of the heat-affected zone of the joint increases significantly, the size and number of precipitated phases in the softening zone decrease and increase, and the softening degree is inhibited under the action of rotational impact with welding. The material studio software was used to analyze the relationship between the phase transformation and stress of the main aging precipitation phases of 6061 aluminum alloy under ideal conditions, and the calculation results showed that the stability of the β" phase and the β phase under pressure was better, and the relative pressure of β′ was more sensitive, and the lattice constant distortion occurred within a certain pressure range. With the increase of the force, the aging precipitation sequence changes.