Contents:

I. Extrusion Benchmark Extrusion Benchmark 2007 – Benchmark Experiments: Study on Material Flow Extrusion of a Flat Die M. Schikorra, L. Donati, L. Tomesani and A.E. Tekkaya II. Keynotes Modifications of the Extrusion Process of Magnesium Alloys for Improved Mechanical Properties S. Mueller, K. Mueller and W. Reimers Experimental Techniques to Characterize Large Plastic Deformations in Unlubricated Hot Aluminum Extrusion H. Valberg Innovative Methodologies for the Simulation of Static Recrystallisation during the Solution Soaking Process of Shape Extrusion T. Sheppard and X. Velay III. Material Flow and Constitutive Equations Flow Front Tracking in ALE/Eulerian Formulation FEM Simulations of Aluminium Extrusion A.J. Koopman, H.J.M. Geijselaers and J. Huétink Numerical Optimization of Bearing Length in Composite Extrusion Processes T. Kloppenborg, M. Schikorra, M. Schomäcker and A.E. Tekkaya Recent Developments in the Manufacture of Complex Components by Influencing the Material Flow during Extrusion N. Ben Khalifa, D. Becker, M. Schikorra and A.E. Tekkaya FE Simulation of Extrusion to Produce a Thin-Walled Wide Profile through a Spreading Pocket Die G. Fang, J. Zhou, J. Duszczyk and X.K. Wu Aluminum Rod Extrusion and Material Modeling P.T. Moe, Y.A. Khan, H. Valberg and S. Støren Hot Workability and Constitutive Equations of ZM21 Magnesium Alloy M. El Mehtedi, L. Balloni, S. Spigarelli, E. Evangelista and G.I. Rosen Constitutive Models for AZ31 Magnesium Alloys C. Bruni, L. Donati, M. El Mehtedi and M. Simoncini IV. Microstructure Insights to Extrusion from Finite Element Modeling H.J. McQueen and E. Evangelista Study on Thixo-Extrusion of Semi-Solid Wrought Magnesium Alloy H. Yan, M.F. Fu, X.C. Tao and H.W. Hu Microstructure Prediction of Hot-Deformed Aluminium Alloys L. Donati, J.S. Dzwonczyk, J. Zhou and L. Tomesani Application of Adaptive Mesh and ALE Method in Simulation of Extrusion of Aluminum Alloys T. Kayser, F. Parvizian, C. Hortig and B. Svendsen V. Seam Welds and Process Optimization Seam Welds Modeling and Mechanical Properties Prediction in the Extrusion of AA6082 Alloy L. Donati and L. Tomesani A Laboratory Scale Equipment to Relieve Force and Pressure in Cold Extrusion of Lead Hollow Components L. Filice, F. Gagliardi and F. Micari Analysis of Metal Flow through a Porthole Die to Produce a Rectangular Hollow Profile with Longitudinal Weld Seams G. Liu, J. Zhou, K. Huang and J. Duszczyk Simulation-Based Design of Ram Speed Profile for Isothermal Extrusion L.X. Li, H. Zhang, J. Hu, J. Zhou and J. Duszczyk Input Parameters Determination for Predicting Ram Speed and Billet Temperature for the First Billet M. Sabater, M.L. Garcia-Romeu and J. Ciurana VI. Dies and Tools Creep and Fatigue Damage in Hot Work Tools Steels during Copper and Aluminium Extrusion C. Sommitsch, T. Wlanis, T. Hatzenbichler and C. Redl Microscopic Examination of the Fracture Surfaces of an H 13 Hot Extrusion Die due to Failure at the Initial Usage Stage D. Tseronis, I.F. Sideris, C. Medrea and I. Chicinas Simulation of Direct Extrusion Process and Optimal Design of Technological Parameters Using FEM and Artificial Neural Network D. Karayel Numerical Simulation of Combined Forward-Backward Extrusion B. Grizelj, M. Plancak and B. Barisic Mechanical Solutions for Hot Forward Extrusion under Plane Strain Conditions by upper Bound Method R. Domingo, A.M. Camacho, E.M. Rubio Alvir and M.A. Sebastián Pérez Different Possibilities of Process Analysis in Cold Extrusion M. Plancak, B. Barisic and B. Grizelj A New Low Friction Die Design for Equal Channel Angular Extrusion T. Canta, D. Frunza, E. Szilagyi and M. Lungu Modeling Approach for Determination of Backward Extrusion Strain Energy on AlCu5PbBi B. Barisic, B. Grizelj and M. Plancak Author Index Keyword Index