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Influence of heat treatment and its sequence on elevated-temperature properties of Al-Mn-Mg 3004 alloy

Liu Kun et Chen X-Grant. (2017). Influence of heat treatment and its sequence on elevated-temperature properties of Al-Mn-Mg 3004 alloy. Materials Science and Engineering: A, 697, p. 141-148.

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URL officielle: https://doi.org/10.1016/j.msea.2017.05.027

Résumé

Various heat treatments with different sequences between the peak precipitation treatment (375 °C/48 h, referred to as “P”) and the high temperature treatment (450–600 °C, referred to as “H”) were performed in Al-Mn-Mg 3004 alloys to simulate their thermal treatments during thermomechanical fabrication processes in the present work. Their influences on the dispersoid precipitation and elevated-temperature properties (yield strength and creep resistance at 300 °C) were investigated. The results indicate that the size of dispersoids increased while the volume fraction of dispersoids decreased with increasing “H” temperature when “P” was performed either prior to or after “H” (denoted as “PH” and “HP”, respectively), which results in the reduction of the elevated-temperature properties. However, the yield strength and creep resistance after “PH” treatments were always higher than those after “HP” treatments at the same “H” temperature. When the “H” temperature during “PH” treatments is controlled below 500 °C, the materials can still maintain the appropriate yield strength and creep resistance, providing the possibility for Al-Mn-Mg 3004 alloy to adapt to the conventional fabrication processes but still maintain high elevated-temperature properties.

Type de document:Article publié dans une revue avec comité d'évaluation
Volume:697
Pages:p. 141-148
Version évaluée par les pairs:Oui
Date:14 Juin 2017
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-Mn-Mg 3004 alloys, heat treatments, dispersoid precipitation, elevated-temperature properties, Alliages Al-Mn-Mg 3004, traitements thermiques, précipitations dispersosoïdes, propriétés à haute température
Déposé le:06 juin 2017 15:18
Dernière modification:06 juin 2017 15:18
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