Modelling of Thermo-Mechanical Behaviour of Magnesium Alloys during Indirect Extrusion

Serkan Ertürk; Dirk Steglich; Jan Bohlen; Dietmar Letzig; Wolfgang Brocks

doi:10.4028/www.scientific.net/KEM.424.167

Paper Titles

The Use of Extruded Profiles as Filling Material in Friction Stir Welding (FSW)
p.137

Analysis of Metal Flow of Aluminum through Long Choked Die Channels
p.145

Friction in Double Action Extrusion
p.153

A New Cone-Friction Test for Evaluating Friction Phenomena in Extrusion Processes
p.161

Modelling of Thermo-Mechanical Behaviour of Magnesium Alloys during Indirect Extrusion
p.167

Numerical Analysis of Four-Hole Extrusion of Aluminum Alloys
p.173

Computer-Aided Simulation of Metal Flow through Curved Die for Extrusion of Square Section from Square Billet
p.181

Three Dimensional Upper Bound Modelling for Extrusion of Round-to-Octagon Section Using Linearly Converging Die
p.189

Measuring the Deformation of a Flat Die by Applying a Laser Beam on a Reflecting Surface
p.197

HomeKey Engineering MaterialsKey Engineering Materials Vol. 424Modelling of Thermo-Mechanical Behaviour of...

Modelling of Thermo-Mechanical Behaviour of Magnesium Alloys during Indirect Extrusion

Abstract:

A yield function for hexagonal closed packed (hcp) metals was modified with respect to strain rate and temperature and developed to capture the material behaviour during extrusion. Magnesium alloy ZEK100 was extruded indirectly at 300°C into a round bar. Compression tests were carried out at various strain rates, temperatures and sample orientation to characterise the material flow. These data were used as input data for fully thermo-mechanical coupled simulations of indirect extrusion. A successful prediction of the extrusion force and the temperature increase during extrusion is presented.