Numerical Simulation of Hot Extrusion Process of Pb-Mg-Al Alloys

The stress-stain curves of Pb-Mg-Al alloy were gained through Gleeble-1500D simulator.The rigid plastic finite element method was used for the couple thermal mechanical numerical simulation of the hot extrusion process of Pb-Mg-Al alloy.The effect of hot deformation parameters on the extrusion pressure and extrusion temperature was analyzed.The numerical simulation results show that extrusion ratio control within 25,extrusion speeds and extrusion temperatures respectively are in 5-15 mm/s and 200-300℃ range,which be beneficial to the Pb-Mg-B-Al alloy hot extrusion process smoothly.