Extrusion Textures in Al-Mg-Si Alloys - 1. Round Extrusions.

Al-Mg-Si alloy billets were heated to 400 or 500 degree C and extruded to obtain round rods 12 or 24 mm in diameter at different extrusion rates. The purpose was to determine the effect of these extrusion conditions and the alloy compositions on the texture of the extrusions. The effect of the manganese content upon the formation of the extrusion texture was found to be considerably stronger than that of the extrusion parameters and the Mg-Si content, and closely related to the microstructure. There exists a distinct inhomogeneity of the extrusion texture across the cross-section of the extrusion. The textures observed were compared with those of wires in the as-drawn and annealed conditions.