Mechanical Properties and Finite Element Simulation of Equal Channel Angular Pressing of 7050 Al Alloy

With the help of finite element method,the effect of different process variables on the distribution of equivalent strain,deformation,extrusion load of 7050 Al alloy during the isothermal equal channel angular pressing was studied.Process variables considered friction factor,channel angle and punch velocity.The results showed that the equivalent strain and extrusion load were greatly affected by the friction factor and channel angle,the punch velocity had little effect on the equivalent strain and extrusion load.The equivalent strain and extrusion load increased with increasing friction factor,and with decreasing channel angle.Experiments discovered that the ultimate strength increased with increasing extrusion passes,and then changed little with extrusion passes after by 4 passes,ultimate strength increased with decreasing channel angle.Elongation decreased greatly after by 1 pass,and then increased little with increasing extrusion passes.