Dresden 2009 – wissenschaftliches Programm
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MM: Fachverband Metall- und Materialphysik
MM 48: Nanostructured Materials IV
MM 48.7: Vortrag
Freitag, 27. März 2009, 11:45–12:00, IFW B
Microstructure, texture and mechanical properties of ultrafine-grained Al alloys produced by accumulative roll bonding — •Juliane Scharnweber1, Werner Skrotzki1, Carl-Georg Oertel1, Heinz-Günter Brokmeier2, Heinz Werner Höppel3, and Irena Topic3 — 1Institut für Strukturphysik, Technische Universität Dresden, 01062 Dresden — 2GKSS Forschungszentrum, 21494 Geesthacht — 3Lehrstuhl Allgemeine Werkstoffwissenschaften, Universität Erlangen-Nürnberg, 91058 Erlangen
The microstructure and local texture of ultrafine-grained Al alloys produced by accumulative roll bonding (ARB) up to 8 cycles were determined by electron backscatter diffraction (EBSD) mapping. The local textures within the thickness of the sheet will be compared with global textures measured by neutron diffraction. Additionally, tensile tests at constant strain rate were applied at room temperature. The strength increases while the ductility of about 4% is independent of the number of ARB cycles. Based on the experimental results the evolution of the microstructure during the ARB process and its kinetics will be discussed.