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A Manufacturing Flow-Path Simulation of the Microstructure Evolution of 6260

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A Manufacturing Flow-Path Simulation of the Microstructure Evolution of 6260 Aluminum Alloy During Extrusion Processing

Lawrence A. Lalli, Alcoa Technical Center and Ralph T. Shuey, Alcoa Technical Center

Track: EXTRUSION PROCESS - Extrusion Process

ABSTRACT --- The control of the solid solution amount and precipitate microstructure
during extrusion processing is key to maximizing productivity and product quality. The
solute remaining in solution after reheating impacts elevated temperature flow stress
and thus, breakout loads. The exit temperature of the extrudate affects the maximum
extrusion speed possible as well as the maximum strength attainable on subsequent
aging. The cooling history on the run-out table can vary along the extrusion length and
contributes to property variability. A simulation of the microstructure evolution along the
manufacturing flow-path can assist optimization of the process parameters impacting
the above. Comparison will be shown of such a simulation with the microstructure and
property results for the 6260 alloy.

© 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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