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WEB How crystallographic texture affects ductile deformation of extruded Al-Mg-Si-alloys

Friday (25.09.2020)
11:50 - 12:05 S: Structural Materials 1
Part of:

Ductility and strength are often opposed properties when dislocation slip governs plastic deformation. Light weight construction materials like Aluminum wrought alloys have to cover both requirements. In particular, the increasing demand for high strength safety parts for the mobility sector requests excellent ductile deformation behavior, while simultaneously maintaining a high strength. The effect of loading orientation on ductility regarding crystallographic texture of extruded Al-Mg-Si alloys is shown in case of two alloys, which exhibit mainly cube and brass texture components, respectively. The ductility is evaluated via three point bend testing. By testing of different loading orientations with respect to the extrusion direction, the maximum bending angle varies with the loading orientation and dominating texture components. The resulting ductility is discussed with slip activation by means of Schmid factor analysis and multi-slip orientation obtained from EBSD data. It is shown, that the orientation of the loading axis relatively to the crystallographic orientation mainly governs the ductility rather than the strength and aging condition.

Philip Goik
Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
Additional Authors:
  • Dr. Heinz Werner Höppel
    Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)