A New Constitutive Model Describing the Plastic Flow of Metals: Application to the AA6082 Aluminum Alloy

Mohamad El Mehtedi; Samer El Mohtadi; Stefano Spigarelli

doi:10.4028/www.scientific.net/KEM.585.59

Paper Titles

Experimental Investigations of Friction Carried out with the Tribo-Torsion-Test and Frictional Modelling
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A New High Speed Friction Test for Extrusion Processes
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Advanced Frictional Models for Extrusion Application
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Numerical Analysis on Surface Ductile Fractures for Some Extrusion Conditions
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A New Constitutive Model Describing the Plastic Flow of Metals: Application to the AA6082 Aluminum Alloy
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A Novel Method for 3D-Die Design in the Extrusion Process Using Equi-Potential Lines
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On the Balance of the Metal Flow in Porthole Dies with Differently Sized Porthole Channels
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Simulation of Material Flow Coupled with Die Analysis in Complex Shape Extrusion
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Finite Element Based Determination and Optimization of Seam Weld Positions in Porthole Die Extrusion of Double Hollow Profile with Asymmetric Cross Section
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 585A New Constitutive Model Describing the Plastic...

A New Constitutive Model Describing the Plastic Flow of Metals: Application to the AA6082 Aluminum Alloy

Abstract:

A new constitutive relationship based on the combination of the Garofalo and Hensel-Spittel equations has been developed and successfully used to model the plastic flow of a AA6082 aluminum alloy. Two regimes of temperature and strain rate were identified: the constitutive analysis suggested that in the low strain rate/high temperature regime, deformation was controlled by viscous glide of dislocations in atmospheres of Mg solute atoms, while in the high strain rate/ low temperature regime, deformation was controlled by climb.

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Periodical:

Key Engineering Materials (Volume 585)

Pages:

59-66

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.585.59

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Online since:

December 2013

Authors:

Mohamad El Mehtedi, Samer El Mohtadi, Stefano Spigarelli

Keywords:

Aluminium Alloy, Constitutive Equations, Hot Working

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