Ultrafast artificial aging of Al–Mg–Si alloys. (February 2016)

• Record Type: Journal Article
• Authors: Werinos, M.; Antrekowitsch, H.; Kozeschnik, E.; Ebner, T.; Moszner, F.; Löffler, J.F.; Uggowitzer, P.J.; Pogatscher, S.
• Is Part Of: Scripta materialia. Volume 112(2016)
• Page Start: 148
• Page End: 151
• Publication Date: 2016-02
• Subjects: Aluminum alloys -- Aging -- Precipitation -- Phase transformation kinetics -- Vacancies; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2015.09.037
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: This study investigates the effect of trace Sn additions on the artificial aging of an Al–Mg–Si alloy at unconventionally high temperatures (> 210 °C), where such additions generate both ultrafast aging kinetics and superior peak hardness. The study shows that the effect of Sn is comparable to the influence of natural pre-aging on high temperature artificial aging, and explains this by solute-vacancy interactions, proposing that during artificial aging Sn-vacancy pairs contribute to diffusion and/or Sn retards the annihilation of quenched-in vacancies. Graphical abstract: