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The Effect of Die Design on the Mechanical Properties of Profiles

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The Effect of Die Design on the Mechanical Properties of Profiles
Recycled From AA6060 Chips by Hot Extrusion

Volkan Güley, Andreas Jäger, A. Erman Tekkaya – Technische Universität Dortmund,
Institute of Forming Technology and Lightweight Construction (IUL), Dortmund,
Germany

Track: MANAGEMENT ISSUES - Sustainability and Recycling

ABSTRACT—The effect of die design on the mechanical properties of profiles recycled from
AA6060 chips by hot extrusion was investigated utilizing two different dies to produce the same
aluminum profile of a 20mm x 5mm rectangular section: a conventional die called flat-face die;
and a porthole die that is typically used for complex hollow and semi-hollow aluminum profiles.
The tensile test results of the extruded profiles were discussed and compared. With the porthole
die, a more than 70 percent higher ductility could be achieved. The mechanical properties of the
extruded profiles were compared in quenched and artificially aged condition (T6 heat treatment).
The mechanical properties of the aluminum profiles extruded from chips were also compared to
the aluminum profiles extruded from as-cast billets in both as-extruded and T6 heat treated
conditions. Keywords: Aluminum, Recycling, Hot Extrusion, Extrusion Die, Chips.

© Extrusion Technology for Aluminum Profiles Foundation (ET Foundation). All rights reserved. No part of The Proceedings may be reproduced in any form without the express written permission of the ET Foundation.

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