Optimization of hot extrusion forming process and microstructure evolution of TC4 titanium alloy Y profile
The control single variable method was used to design the extrusion tests of profiles,and the effects of different extrusion die angles,extrusion temperatures and extrusion speeds on metal flow,effective stress,effective strain and the maximum extrusion force in the process of hot extrusion forming were simulated and analyzed by DEFORM-3D finite element software.The simulation results show that when the extrusion die angle is 45°,the extrusion temperature is 1050 ℃ and the extrusion speed is 120 mm·s-1,the extrusion force of TC4 titanium alloy Y profiile is the smallest and the surface quality of the product is the best.Based on the simulation results,the extru-sion process test of the titanium alloy Y profile was carried out and the metallographic structure of the extruded product was observed.The test results show that with reasonable extrusion die angle,temperature and speed,TC4 titanium alloy Y profile with qualified quality such as surface,flatness and size can be extruded,and the microstructure after extrusion is refined.
万方数据
维普
