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MM: Fachverband Metall- und Materialphysik

MM 36: Topical Session Bulk Nanostrucured Materials VIII - Functional Properties I

MM 36.4: Vortrag

Mittwoch, 28. März 2012, 16:00–16:15, H 0106

Strength and conductivity of graded Cu-particle reinforced aluminium processed by accumulative roll bonding — •Mathis Ruppert, Christian Werner Schmidt, Heinz Werner Höppel, and Mathias Göken — Institute I: General Materials Properties, Department Materials Science and Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany

Among the different processes of severe plastic deformation, accumulative roll bonding (ARB) is most prominent for production of ultrafine-grained sheet materials and has been studied extensively regarding microstructural evolution and mechanical properties. Besides the conventional ARB-processing route it is also possible to produce tailored multicomponent materials. In this context, particle reinforcement is of special interest, because of the manifold varieties of particles and distributions to tailor ultrafine-grained materials.

Applying particles in a highly controlled manner by air gun spraying from aqueous suspensions is used in this work as a method to introduce copper particles (d~1 micron) into aluminium AA1050A during ARB. Moreover it is demonstrated that the spatial distribution of particles within the sheet is widely controllable. Therefore homogeneous as well as continuously graded distributions can be achieved in all three dimensions of the sheet material. By this freedom of design, mechanical properties as well as electrical conductivity can be tailored rather locally within one sheet.