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MM: Fachverband Metall- und Materialphysik

MM 55: Mechanical Properties III

MM 55.4: Vortrag

Donnerstag, 19. März 2015, 12:30–12:45, TC 010

Aluminium-magnesium lightweight metal compound — •Enrico Knauer, Jens Freudenberger, and Ludwig Schultz — IFW Dresden Helmholtzstraße 20 01069 Dresden

Although the workability of magnesium is negligible under the conditions of rotary swaging, co-deformation of magnesium within a tube is possible. This process can be operated successfully up to a logarithmic deformation strain of at least 8, when utilizing an AA6082 tube. The microstructure of magnesium shows a decreasing grain size with increasing deformation strain, saturating at a grain size well below 5 *m. In addition, a preferential texture with a [1 010] ring fibre component is established during deformation. The evolution of the microstructure determines the mechanical properties of the composite, which is characterised by an ultimate tensile strength of 240 MPa. This corresponds to a specific strength of 104 MPa/(g/cm3).