Dresden 2006 – wissenschaftliches Programm

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MM: Metall- und Materialphysik

MM 2: Symposium Severe Plastic Deformation I

MM 2.1: Fachvortrag

Montag, 27. März 2006, 10:15–10:45, IFW A

Accumulative Roll-Bonding of Aluminium and Aluminium Alloys — •Irena Topic, Christine Klösters, Heinz-Werner Höppel, and Mathias Göken — Friedrich-Alexander-University Erlangen-Nuremberg, Department of Materials Science and Engineering, Institute of General Material Properties (WW1), Martensstraße 5, 91058 Erlangen, Germany

The interest in ultrafine-grained (UFG) materials has increased strongly during the past decade due to their superior strength and ductility. One of the ways to obtain an UFG microstructure is by accumulative roll-bonding (ARB). This is a severe plastic deformation process capable of obtaining an average grain size below 1um. During the ARB process, the 1mm aluminium strips are wire brushed, stacked, rolled together with a thickness reduction of 50% and at the end halved. The whole process was repeated up to 12 times for technically pure aluminium and up to 10 times for the aluminium alloy AA6016. The biggest advantage of this process is that it can be adopted in the industry to produce large scale UFG metal sheets. Due to the significantly increased specific strength paired with a high ductility, UFG sheet metals processed by ARB have a strong potential for prospective engineering applications in the transportation industry. In order to qualify the ARB process for these purposes detailed investigations on the robustness of the process, mechanical properties and the microstructural evolution are being carried out.