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Development of Al-Mn-Mg 3004 alloy for applications at elevated temperature via dispersoid strengthening

Liu Kun et Chen X-Grant. (2015). Development of Al-Mn-Mg 3004 alloy for applications at elevated temperature via dispersoid strengthening. Materials and Design, 84, p. 340-350.

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URL officielle: http://dx.doi.org/10.1016/j.matdes.2015.06.140

Résumé

In this study, the potential applications of Al-Mn-Mg 3004 alloy at elevated temperature have been evaluated through the systematic study of the precipitation behavior of α-Al(MnFe)Si dispersoids and their effect on material properties during precipitation treatment and long-term thermal holding. The results demonstrate a significant dispersion strengthening effect caused by the precipitation of fine uniformly distributed dispersoids during precipitation treatment. The peak compression yield strength (YS) at 300°C of the experimental 3004 alloy can reach as high as 78 MPa due to a large volume fraction (~2.95 vol. %) of α-Al(MnFe)Si dispersoids. The dispersoids are found to be thermally stable at 300°C for up to 1000 h of holding, leading to consistently high mechanical performance and creep resistance. The superior and stable YS and creep resistance at 300°C enables the 3004 alloy to be applied to weight-sensitive applications at elevated temperatures.

Type de document:Article publié dans une revue avec comité d'évaluation
Volume:84
Pages:p. 340-350
Version évaluée par les pairs:Oui
Date:5 Novembre 2015
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
Mots-clés:Al-Mn-Mg 3004 alloy, precipitation treatment, dispersoid strengthening, thermal stability, creep resistance, elevated temperature applications
Déposé le:09 nov. 2016 01:55
Dernière modification:09 nov. 2016 01:55
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