LiveZilla Live Chat Software

Constellation, le dépôt institutionnel de l'Université du Québec à Chicoutimi

Effect of transition elements on dispersoid formation and elevated-temperature mechanical properties in 6082 aluminum alloy

Elgallad E. M., Liu Kun, Zhang Zhan et Chen X-Grant. (2020). Effect of transition elements on dispersoid formation and elevated-temperature mechanical properties in 6082 aluminum alloy. Philosophical Magazine, 101, (1), p. 96-116.

[img] PDF - Version acceptée
Administrateurs seulement jusqu´à 29 Septembre 2021.

3MB

URL officielle: http://dx.doi.org/doi:10.1080/14786435.2020.182659...

Résumé

The effect of transition elements, specifically Mn, Cr, V, and Mo, on dispersoid formation and mechanical properties in 6082 aluminum alloy was studied. The elevated-temperature mechanical properties were evaluated based on the compressive yield strength and creep resistance. The results indicated that the addition of Mn to the 6082 alloy resulted in the formation of a large number of the thermally stable α-Al(MnFe)Si dispersoids, thereby significantly improving the elevated-temperature mechanical properties of the alloy. Subsequent additions of Cr, V, and Mo increased the amount of Mn-bearing intermetallic phases, which decreased the supersaturation levels of Mn and Si in the α-Al, and consequently decreased the volume fraction of the dispersoids. The alloys containing Cr, V, and Mo exhibited similar yield strengths at 300°C and higher yield strengths at room temperature compared to the alloy containing only Mn. The size effect of the smaller dispersoids containing Cr, V, and Mo together with the solid-solution hardening of these elements could balance out the strength decrease resulting from the decreased volume fraction of the dispersoids. The additions of Cr, V, and Mo significantly increased the creep resistance of the Mn-containing 6082 alloy. Vanadium induced the highest creep resistance followed by Cr and Mo. Solute atoms of these elements with low diffusivity in the aluminum matrix contributed significantly to increasing the creep resistance at 300°C.

Type de document:Article publié dans une revue avec comité d'évaluation
ISSN:1478-6435
Volume:101
Numéro:1
Pages:p. 96-116
Version évaluée par les pairs:Oui
Date:29 Septembre 2020
Identifiant unique:10.1080/14786435.2020.1826592
Sujets:Sciences naturelles et génie
Sciences naturelles et génie > Sciences appliquées
Département, module, service et unité de recherche:Départements et modules > Département des sciences appliquées > Module d'ingénierie
Mots-clés:Al-Mg-Si 6082 alloy, transition elements, dispersoid strengthening, elevated-temperature mechanical properties, creep resistance
Déposé le:03 févr. 2021 17:41
Dernière modification:03 févr. 2021 17:41
Afficher les statistiques de telechargements

Éditer le document (administrateurs uniquement)

Creative Commons LicenseSauf indication contraire, les documents archivés dans Constellation sont rendus disponibles selon les termes de la licence Creative Commons "Paternité, pas d'utilisation commerciale, pas de modification" 2.5 Canada.

Bibliothèque Paul-Émile-Boulet, UQAC
555, boulevard de l'Université
Chicoutimi (Québec)  CANADA G7H 2B1
418 545-5011, poste 5630