Twin-roll casting (TRC) is a modern method of preparation of aluminum alloys. The distinctive feature of TRC is the combination of rapid metal solidification and subsequent plastic reduction in a single combined processing step. As a result of intensive heat extraction to the coolant via caster rolls, the melt solidifies and undergoes plastic reduction similar to the rolling process. However, some specific microstructural features of twin-roll cast strips, which restrict applications of this technology, are known. These are localised centreline segregation, surface and near-surface microsegregation and microstructural inhomogeneity. These features lead to the deterioration of mechanical properties of the strips, in particular strength, formability and corrosion resistance and can only be eliminated during a complex thermomechanical treatment. In the present contribution, segregations in TRC Al-Mg-Sc-Zr alloy were studied by means of light optical microscopy, electron microscopy and 3D X-ray computer tomography. The spatial distribution was successfully detected and morphology was described.
|Title of host publication||Proceedings of the 27th International Conference on Metallurgy and Materials|
|Publication status||Published - 2018|
|Event||27th International Conference on Metallurgy and Materials (METAL 2018) - Brno, Czech Republic|
Duration: 23 May 2018 → 25 May 2018
|Conference||27th International Conference on Metallurgy and Materials (METAL 2018)|
|Period||23.05.2018 → 25.05.2018|