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Determination of the die geometry influence in gradation extrusion using numerical simulation and analytical calculation

: Bergmann, M.; Schubert, N.; Sterzing, A.; Landgrebe, D.


TU Chemnitz, Institut für Werkstoffwissenschaft und Werkstofftechnik:
18th Chemnitz Seminar on Materials Engineering - 18. Werkstofftechnisches Kolloquium 2016 : Chemnitz, 10 - 11 March 2016
Bristol: IOP Publishing, 2016 (IOP conference series. Materials science and engineering 118)
Seminar on Materials Engineering <18, 2016, Chemnitz>
Werkstofftechnisches Kolloquium <18, 2016, Chemnitz>
Fraunhofer IWU ()

The forming process Gradation Extrusion enables a severe plastic deformation with a large gradient of microstructure. Materials with tailored properties can thus be provided. Controlling the gradation of the microstructure requires knowledge of the interaction of forming process and the special die geometry. Based on an analytical calculation approach different geometry variants are characterized. Additionally, selected variants are studied more comprehensively by numerical simulation. The mechanisms of the interaction and possibilities of influencing the deformation process by die design and process parameter optimization are presented and analysed.