Texture Gradient in a Rectangular Extruded Al60Mg40 Metal Matrix Composite

• Main Authors: Soheil Sanamar, Heinz-Günter Brokmeier, Norbert Schell
• Format: Article
• Language: English
• Published: MDPI AG 2019-02-01
• Series: Metals
• Subjects: extrusion; texture gradients; metal matrix composite; synchrotron radiation; neutron radiation
• Online Access: https://www.mdpi.com/2075-4701/9/2/167

By applying cold extrusion, an elemental metal powder composite Al60Mg40 was prepared. The texture gradient was measured over the cross-section of the extrusion profile using synchrotron radiation while the bulk texture was obtained by neutron diffraction. The aluminum phase shows a typical texture component of plane-strain deformation in the middle part of the sample and a uniaxial deformation texture at the surface. In the central region of the extruded bar, the (0002) Mg pole figure shows a split along the extrusion direction (±ED), which also has been observed in rare-earth containing magnesium alloys. These two poles twist towards the transverse direction on moving towards the surface of the extruded bar; one pole moves to +TD and the other one to −TD. The angle of twist increases towards the TD surface.