Numerical Simulation Study of ECAP Process of AZ31 Magnesium Alloy and 7050 Aluminum Alloy
The Abaqus finite element software was used to perform equal channel angular pressing(ECAP)numerical simulation studies of AZ31 magnesium alloy and 7050 aluminum alloy.The stress field,strain field and load-displacement curve were obtained by finite element(FE)simulation.The deformation laws of the ECAP at different extrusion temperatures,extrusion velocities,friction conditions and different cross sections were analyzed.The results show that increasing extrusion temperature can reduce the extrusion load,which is conducive to the extrusion of AZ31 magnesium alloy.Deformation under small friction is conducive to reducing the extrusion load and improving the deformation uniformity.Without considering the effect of temperature rise in the deformation process,the extrusion speed has a small effect on the extrusion load,and the maximum equivalent strain value increases when the extrusion speed increases.The circular cross section is more suitable for ECAP than the square cross section.
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