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Material Flow and Grain Deformation during Extrusion

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Abstract:

A combination of numerical simulation using the finite element method (FEM) and experimental characterization was used to study material flow and grain deformation during the hot extrusion process for an AA3003 aluminum alloy. The grain structure of the extrudate was experimentally studied using optical microscopy and Electron Back-Scattered Diffraction (EBSD) methods. Using the FEM model predictions of material flow, a simple procedure was used to predict the spatial variation of grain thickness both through the extrusion and along its length. Experimental measurements using EBSD of the grain thickness at the center of the extrudate show that the model predictions are in good agreement with the measurements. The model was then used to calculate the grain thickness changes along the extrudate.

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Periodical:

Materials Science Forum (Volumes 794-796)

Pages:

664-669

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.794-796.664

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Online since:

June 2014

Authors:

Y. Mahmoodkhani*, Mary A. Wells, Lina Grajales, Warren J. Poole, Nick C. Parson

Keywords:

Extrusion, Finite Element Method (FEM), GDRX, Grain Deformation

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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