Ultrafast artificial aging of Al-Mg-Si alloys

Marion Werinos, Helmut Antrekowitsch, E. Kozeschnik, Thomas Ebner, J. F. Löffler, P. J. Uggowitzer, Stefan Pogatscher

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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.
Original languageEnglish
Pages (from-to)148-151
JournalScripta materialia
Publication statusPublished - 2016


  • Aging
  • Aluminum alloys
  • Phase transformation kinetics
  • precipitation
  • Vacancies

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