TY - JOUR

T1 - Ultrafast artificial aging of Al-Mg-Si alloys

AU - Werinos, Marion

AU - Antrekowitsch, Helmut

AU - Kozeschnik, E.

AU - Ebner, Thomas

AU - Löffler, J. F.

AU - Uggowitzer, Peter

AU - Pogatscher, Stefan

PY - 2016

Y1 - 2016

N2 - 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.

AB - 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.

KW - Aging; Aluminum alloys; Phase transformation kinetics; precipitation; Vacancies

KW - Aging

KW - Aluminum alloys

KW - Phase transformation kinetics

KW - precipitation

KW - Vacancies

M3 - Article

VL - 112

SP - 148

EP - 151

JO - Scripta materialia

JF - Scripta materialia

SN - 1359-6462

ER -