Numerical simulation of deformation behavior on titanium and titanium alloy via Twist Extrusion (TE)

Twist Extrusion (TE) is a new severe plastic method used to obtain ultrafine-grained microstructures with good properties successfully. To meet the requirements of some special service environment, the simulation research was conducted to analyze different deformation behaviors on Titanium and Titanium alloy in TE using the Deform-3D software by the principle of rigid-plastic finite element. The results show the max strain of TE exceeds to 0.863 and stress concentrates on the edges of the sample. With designing the angle at the corner, the concentrated stress on the die is decreased and the life of the die is prolonged, which will be of great important reference value and guidance for the actual production.