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; El Mohtadi, S.; Spigarelli, Stefano. - ELETTRONICO. - 585:(2014), pp. 59-66. [10.4028/www.scientific.net/KEM.585.59]
A New Constitutive Model Describing the Plastic Flow of Metals: Application to the AA6082 Aluminum Alloy
EL MEHTEDI, Mohamad;SPIGARELLI, Stefano
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
