Abstract
The characterization of materials is essential for process development and process optimization. As the virtual techniques are becoming increasingly common, the material data must be identified and modelled in consideration of the process-relevant parameters (forming temperature, strain rate, sample position, main stress state and orientation). In order to ensure the model functionality, two light metal alloys – aluminium EN AW-6060 (AlMgSi0.5) and magnesium alloy AZ31 – were studied, which differ in terms of their forming behaviour and sample surface state. In order to establish a reliable test method for the determination of flow curves for thin sheet, the materials were upset in the cylindrical and stacked compression test. These were subsequently modelled by the semi-empirical Hensel-Spittel approach, for use in commercial Finite Element (FE) software.
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