J. Phys. Colloques
Volume 50, Number C8, Novembre 198936th International Field Emission Symposium
|Page(s)||C8-419 - C8-424|
J. Phys. Colloques 50 (1989) C8-419-C8-424
DECOMPOSITION IN BINARY Al-Li ALLOYST. AL-KASSAB1, A. MENAND2, P. AUGER2 et P. HAASEN1
1 Institut für Metallphysik der Universität Göttingen, SFB 126, Hospitalstrasse 3/5, D-3400 Göttingen, FRG
2 Laboratoire de Microscopie Ionique, CNRS URA 808, Faculté des Sciences de Rouen, BP. 118, F-76134 Mont Saint Aignan, France
We have investigated the influence of aging on the morphology and phase composition of annealed Al-Li binary alloys by means of an atom probe with a multi-detection system. The influence of artifacts such as the preferential evaporation of the Li-atoms and the pile-up effects for the Al-atoms were analysed as well. Specimens of Al- 2.0 wt%Li and Al -2.9 wt%Li were solution treated and aged at 190°C and 150°C for several times. δ'-precipitates were observed by FIM and their composition as well as the Li-content of the matrix were obtained by performing AP analysis for the different heat treatments.