LiveZilla Live Chat Software

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

Precipitation behavior of dispersoids and elevated-temperature properties in Al–Si–Mg foundry alloy with Mo addition

Chen Sinan, Liu Kun et Chen X-Grant. (2019). Precipitation behavior of dispersoids and elevated-temperature properties in Al–Si–Mg foundry alloy with Mo addition. Journal of Materials Research, 34, (18), p. 3071-3081.

[img] PDF - Version acceptée
Administrateurs seulement jusqu´à 30 Mars 2020.

513kB

URL officielle: https://doi.org/10.1557/jmr.2019.217

Résumé

In the present work, Mo was added to an Al-Si-Mg foundry alloy to study its influence on the evolution of dispersoids during various heat treatments. The microhardness as well as the elevated-temperature tensile properties and creep resistance was measured to evaluate the contribution of dispersoids. Results showed that the addition of Mo greatly promoted the formation of α-dispersoids. During solution treatment, the formation of α-dispersoids started after 8 hours at 500 °C. At high temperature (540 °C), the coarsening of dispersoids with increasing time became predominant. The optimum condition of dispersoids can be reached by 520°C/12h or 500°C/4h + 540°C/2h, leading to the highest differences in microhardness between the Mo-containing alloy and base alloy. The tensile strengths were improved at both room temperature and elevated temperatures, while the elongation at elevated temperature was greatly increased. The creep resistance at elevated temperature is further enhanced due to the Mo addition.

Type de document:Article publié dans une revue avec comité d'évaluation
Volume:34
Numéro:18
Pages:p. 3071-3081
Version évaluée par les pairs:Oui
Date:30 Septembre 2019
Sujets:Sciences naturelles et génie > Génie > Génie des matériaux et génie métallurgique
Département, module, service et unité de recherche:Départements et modules > Département des sciences appliquées > Module d'ingénierie
Mots-clés:Al-Si foundry alloy, heat treatment, dispersoids, elevated-temperature properties, creep resistance, alliage de fonderie Al-Si, traitement thermique, dispersoïdes, propriétés à température élevée, résistance au fluage
Déposé le:12 nov. 2019 22:53
Dernière modification:12 nov. 2019 22:53
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