Simulation of Coarse Grain Evolution during Hot Extrusion of Al-Mg-Si Alloy

Johannes Kronsteiner; Sindre Hovden; Aurel Arnoldt; Johannes Österreicher

doi:10.4028/p-fu152h

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Effect of Temperature on Surface Cracking Defects in AA7075 Hot Extrusion
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Modeling Friction in HyperXtrude for Hot Forward Extrusion Simulation of EN AW 6060 and EN AW 6082 Alloys
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Simulation of Coarse Grain Evolution during Hot Extrusion of Al-Mg-Si Alloy
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 926Simulation of Coarse Grain Evolution during Hot...

Simulation of Coarse Grain Evolution during Hot Extrusion of Al-Mg-Si Alloy

Abstract:

Coarse grains at or near the surfaces of extruded aluminum profiles can have a major detri-mental influence on their ductility and surface quality. Thus, the extrusion industry aims to minimizecoarse grains while increasing the productivity of the process. Peripheral Coarse Grains (PCG) de-velop depending on local state variables such as temperature, strain and strain rate. Here we presenta microstructure based material model implemented into HyperXtrude™, capable of predicting thedevelopment of PCG by combining geometric Dynamic Recrystallization (gDRX) and conventionalgraingrowthmodels.Duetoitshistorydependence,themodelisimplementedtorunduringthewholetransient extrusion simulation. The first results of the predicted ram force as well as final grain distri-bution in the profile show reasonable agreement with experimental trials and electron backscattereddiffraction results.

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Periodical:

Key Engineering Materials (Volume 926)

Pages:

426-435

DOI:

https://doi.org/10.4028/p-fu152h

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Online since:

July 2022

Authors:

Johannes Kronsteiner*, Sindre Hovden, Aurel Arnoldt, Johannes Österreicher

Keywords:

FEM, Geometric Dynamic Recrystallization, Metal Extrusion, Microstructure Modelling

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