About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Vacancy Engineering in Metals and Alloys
|
| Presentation Title |
Positron annihilation spectroscopy in Mg and Mg-alloys |
| Author(s) |
Marc H. Weber, Sreenivas Raguraman, Michael Falk, Timothy Weihs |
| On-Site Speaker (Planned) |
Marc H. Weber |
| Abstract Scope |
Positron annihilation spectroscopies (PAS) are particularly suited to prove for vacancies in metals, semiconductors and insulators. In some metals such as magnesium vacancies are mobile at room temperature and may survive only in the presence of alloying elements. This simplifies the identification of metal impurity complexes. Homogenized samples of pure Mg and Mg-X alloys with X being Al, Zn, and Y are quenched or slowly cooled from 450C with and without being mechanically deformed. The positron beam at Washington State University is used to obtain depth profiles of the annihilation parameters from the surface to a mean depth of 22 m. Results will be discussed in relation to the doping element and concentration and compared to modelling predictions. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnesium, Characterization, |