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JEEP 2009, 00005 (2009)
DOI: 10.1051/jeep/200900005
lnfluence de Cd sur la Précipitation des Solutions Solides Al-21%(m)Zn et Al-77%(m)Zn
F. Debab et M. Kadi-HanifiLaboratoire ‘Solutions solides’, Faculté de Physique, USTHB, BP 32 El-Alia, Babezzouar, Alger, Algérie
Publié en ligne le 4 décembre 2009
Résumé
On montre l’influence de Cd sur la formation des zones Guinier-Preston (GP) dans Al-21%(m)Zn-0,2%(m)Cd, et sur la précipitation de la phase d’équilibre β dans Al-77%(m)Zn-0,2%(m)Cd, par une méthode basée sur des mesures de microdureté. On observe un retard dans la formation des zones GP et une accélération de la précipitation de β
Abstract
We show the influence of Cd on the Guinier-Preston (GP) zone precipitation in Al-21%(w)Zn-0.2%(w)Cd, and on the β equilibrium phase formation in Al-77%(w)Zn-0.2%(w)Cd. For this a method based on the microhardness measurements is used. Cd causes a delay in the GP zone formation and the β formation is accelerated.
Mots clés : Alliage Al-Zn -- précipitation -- durcissement structural
© Owned by the authors, published by EDP Sciences 2009
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