Study on Thixo-Extrusion of Semi-Solid Aluminium
Thixo-extrusion processing could become an important technique to extend the range and complexity of extruded profiles. This work presents the results of thixo-extrusion process applied on aluminium alloy and they were carried out with both computer numerical simulation and experimental methods. The thixo-extrusion set-up was made. Backward extrusion tests were particularly studied and simulated using Forge 2005 software. The constitutive equation used for these simulations is based on a micro-macro model for the semi-solid evolution. The constitutive equation parameters were identified due to comparisons of the simulated load-displacement responses with experimental ones for backward extrusion tests on 7075 semi-solid aluminium alloy, for different temperatures.
G. Hirt, A. Rassili, A. Bührig-Polaczek
A. Neag et al., "Study on Thixo-Extrusion of Semi-Solid Aluminium", Solid State Phenomena, Vols. 141-143, pp. 659-664, 2008