May 13 - 16, 2008
Gaylord Palms
Orlando, Florida USA

Extrusion/Die Theoretical

142 TH 
Thursday, May 15 - 3:15pm

Control of Asymmetric Recrystallization in Single and Multi-Hole Die Extrusion


Terry Sheppard, Zhi Peng -- Bournemouth University, UK


Effect of introducing a pocket die for single-hole and multi-hole extrusion is considered. The pocket’s influence on material flow in single and multi-hole extrusion is modeled by 3-D Finite Element Method (FEM). Exit velocity, temperature difference, and material deformation across the die orifice are illustrated. Pocket die design’s influence on material structure is studied via physically based models combined with FEM simulation.