A prediction model of the extrusion deformation with residual stress on 6063 aluminum alloy aeronautical plate considering different extrusion parameters

The deformation of aluminum alloy aeronautical plate is a common problem in the processing. The machining deformation can usually be predicted by the initial residual stress in the aluminum alloy plate. In this study, a prediction model considering the extrusion parameters for predicting the machining deformation of aluminum alloy plate is proposed. The FEM simulations and experiments are conducted to validate the accuracy of the prediction model, and not only the residual stress results but also the deformation results show good agreements. In addition, the other four groups of experiments are performed to obtain the results of machining deformation under different extrusion parameters. Finally, the relationship between machining deformation and extrusion parameters is discussed. The extreme values and their positions of the deformations under different parameters are given.