Residual stress homogenization of SiC P /Al composites with thermal vibration coupling

Residual stresses are found in a wide variety of components. Both of machining and heat treatment can generate residual stress. The existence of residual compressive stress will improve the mechanical properties of parts, while the presence of residual tensile stress will reduce the mechanical properties of parts, making them prone to damage. Therefore, residual stress is the main factor that affects the deformation and mechanical properties of parts. The homogenization of residual stress is of great significance to the improvement of mechanical properties of parts. In this article, the SiCp/Al composite material finite element model was established, and the corresponding simulation and experiment were carried out. The results show that the simulation results are consistent with the experimental results. The analysis results show that (1) after the TVCG residual stress homogenization process, most of the residual stress will decrease, the residual tensile stress in some areas of the model surface will become residual compressive stress; (2) the residual stress reduction rate gradually increases from the model surface to the inside; (3) the optimal parameters for the homogenization process of SiCp/Al composites with thermal vibration coupling aging are 185 °C/56 Hz.