Abstract
Positron annihilation and three-dimensional atom probe (3DAP) techniques are employed to investigate the pre-precipitation of solute clustering in Al-Cu-Mg, Al-Cu-Mg-Ag and Al-Li-Cu-Mg-Ag alloys. Not only by observing the solute clusters using 3DAP but also by detecting quenched-in vacancies and their vacancy-solute complexes using positron lifetime and coincidence Doppler broadening (CDB) of positron annihilation, we reveal the effect of vacancy-solute interactions in the solute clustering in the early stage of the precipitation in the Al alloys. The present success shows that the combination of positron annihilation and 3DAP is very useful to study the mechanism of the solute clustering.
| Original language | English |
|---|---|
| Pages (from-to) | 287-292 |
| Number of pages | 6 |
| Journal | Materials Forum |
| Volume | 28 |
| Publication status | Published - 2004 Dec 1 |
| Event | 9th International Conference on Aluminium Alloys - Brisbane, Australia Duration: 2004 Aug 2 → 2004 Aug 5 |
Keywords
- 3DAP
- Coincidence doppler broadening
- Positron annihilation
- Precipitation
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering