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.

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

EL MEHTEDI, Mohamad
;
2014-01-01

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.
2014
9783037858837
Aluminum alloys; Constitutive equations; Hot working
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11584/300801
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