Experiments in plane-strain extrusion

Abstract The results of experiments in the plane-strain extrusion of lead and aluminium with dies of semiangle 30°, 45°, 60°, 75° and 90° at various reductions are presented, and a comparison of the experimental values with those predicted by the use of slip-line field methods is made. Conclusions are drawn about the nature of the process and the predictive value of the theory.