Migration of Thermal Vacancies in Quenched Pure AA1050 by Positron Annihilation
| Periodical | Defect and Diffusion Forum (Volume 293) |
|---|---|
| Main Theme | Defects and Diffusion in Metals |
| Edited by | David J. Fisher |
| Pages | 19-26 |
| DOI | 10.4028/www.scientific.net/DDF.293.19 |
| Citation | Emad A. Badawi et al., 2009, Defect and Diffusion Forum, 293, 19 |
| Online since | August, 2009 |
| Authors | Emad A. Badawi, M.A. Abdel-Rahman, E.M. Hassen, M. Abdel-Rahman, M.O. Abdel-Hamed |
| Keywords | AA1050 Ingot, Lifetime, Migration Enthalpy, Thermal Vacancies |
| Price | US$ 28,- |
A description of positron annihilation spectroscopy (PAS) in solids is given in terms of a trapping model. Data are presented for a commercial AA1050 dilute alloy ingot, and fitted to a model allowing presentation in the form of Arrhenius plots. From whence the value of the activation enthalpy, , for thermal vacancies obtained by PAS for AlFeSi is found to be 0.860.18eV.