Cold rolling textures in AZ31 wrought magnesium alloy

Abstract

Samples of the magnesium alloy AZ31 (3 wt% Al, 1 wt% Zn, balance Mg) with two microstructures, recrystallized and squeeze cast, were rolled at room temperature. The initial texture and the final cold rolling texture were investigated by X-ray diffraction. The cold rolling texture of both examined initial microstructures consists of two fibres, representing the familiar double peak in the basal pole tilted ±15° from the normal direction to the rolling direction. A systematic texture modelling was performed using a viscoplastic Taylor model, based on different combinations of four slip modes and one twinning mode. The best agreement with experiment can be achieved for a combination of 〈 a〉-basal, 〈 a〉-prismatic, 〈 c+ a〉-pyramidal slip systems together with the {0 1 1 ̄ 2}〈0 1 1 ̄ 1 ̄ 〉 twinning system.