Abstract
The influence of specific processing routes on the microstructure, texture, mechanical and technological properties of two commercial twin-roll cast alloys - AlMg2Mn0.8 (AA5049) and AlMg3 (AA5754) – was investigated. Sheets of 1.0 mm gauge were prepared in laboratory conditions with and without homogenization treatment. Non-homogenized samples were rolled also in industrial conditions. Surprisingly, it was found that homogenization results in grain coarsening and degradation of sheet anisotropy. Sheets produced by cold rolling from as-cast thickness of 6.0 mm directly to thickness of 1.0 mm and final annealing exhibit very fine grain size, higher strength combined with higher elongation and lower anisotropy as compared to the homogenized variant. The structure and mechanical properties of materials processed in laboratory and in industrial conditions are slightly different.

Key words
Al-Mg alloys, twin-roll casting, microstructure, mechanical properties, formability

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