Hot deformation properties of 8006 aluminium alloy

Abstract The hot flow stress of the EN AW 8006 aluminum alloy has been determined considering its microstructural transformations. Experiments were carried out on a Gleeble 3800 thermo-mechanical physical simulator in continuous compression tests at the following parameter ranges: temperature 300-500 ° C, strain rate 1-50 1/s. After the tests, rapid cooling preserved the microstructure. Metallographic tests were performed to determine the grain structure. The effects of friction and the heat generated during the process were also considered by using analytical correlations. These significantly influenced the measured results. In parallel with the physical experiments, virtual tests by FEM were performed for more accurate evaluation of the measurement results. Based on the corrected flow stress curves, the material parameters of the constitutive equation were determined. Laasraoui and Jonas description models’ modes have been used to evaluate the relationship between the flow stress and deformation. During continuous deformation, dynamic recovery was the only softening process. The parameters of the flow stress equation were described by their dependence on the Zener-Hollomon parameter.