Vacancy Behavior and Solute Cluster Growth During Natural Aging of an Al-Mg-Si Alloy

@article{Lay2012VacancyBA,
  title={Vacancy Behavior and Solute Cluster Growth During Natural Aging of an Al-Mg-Si Alloy},
  author={Matthew D. H. Lay and Hatem S. Zurob and Christopher Hutchinson and Timothy J. Bastow and Anita J Hill},
  journal={Metallurgical and Materials Transactions A},
  year={2012},
  volume={43},
  pages={4507-4513}
}
The natural aging behavior of an Al-0.46Mg-1.05Si-0.14Fe (wt pct) alloy was studied with positron annihilation lifetime spectroscopy at four temperatures and with 25Mg solid-state nuclear magnetic resonance. The evolution of positron lifetime is shown to consist of three distinct stages. In an effort to understand the physical processes occurring during natural aging, a phenomenological model was developed for the first two stages and is shown to describe the experimental observations well. The… CONTINUE READING