Deformation behaviour of rolled AZ31 sheets that were subjected to the accumulative roll bonding was investigated. Substantially refined microstructure of samples was achieved after the first and second pass through the rolling mill. Sheets texture was investigated using an X-ray diffractometer. Samples for tensile tests were cut either parallel or perpendicular to the rolling direction. Tensile tests were performed at temperatures ranging from room temperature up to 300 °C. Tensile plastic anisotropy, different from the anisotropy observed in AZ31 sheets by other authors, was observed. This anisotropy decreases with an increasing number of rolling passes and increasing deformation temperature. Grain refinement and texture are the crucial factors influencing the deformation behaviour.

COMTES FHT a s Průmyslová 995 334 41 Dobřany Czech Republic

Department of Physics of Materials Faculty of Mathematics and Physics Charles University Ke Karlovu 5 121 16 Praha 2 Czech Republic

Helmholz Zentrum Geesthacht Magnesium Innovation Centre Max Planck Street 1 D21502 Geesthacht Germany

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