Numéro
J. Phys. Colloques
Volume 49, Numéro C6, Novembre 1988
35th International Field Emission Symposium / 35éme Symposium International d'Emission de Champ
Page(s) C6-353 - C6-358
DOI https://doi.org/10.1051/jphyscol:1988661
35th International Field Emission Symposium / 35éme Symposium International d'Emission de Champ

J. Phys. Colloques 49 (1988) C6-353-C6-358

DOI: 10.1051/jphyscol:1988661

ATOM-PROBE STUDY OF ALUMINIUM-LITHIUM ALLOYS

A. MENAND1, T. AL KASSAB2, S. CHAMBRELAND1 et J.M. SARRAU1

1  Laboratoire de Microscopie Ionique, CNRS UA-808, Faculté des Sciences de Rouen, BP 118, F-76134 Mont-Saint-Aignan Cedex, France
2  Institut für Metallphysik der Universität Göttingen, D-3400 Göttingen, F.R.G.


Abstract
We analysed Al-Li based alloys by means of atom-probe. The influence of parameters such as the tip temperature and the pulse fraction on the apparent composition were investigated for an Al-2.7at%Li alloy and for an Al-7.5at%Li-1.2at%Cu alloy. A ternary Al-3.5wt%Li-3.6wt%Mg alloy aged 24h at 190° C was studied. Atom-probe results point out the presence of Mg in the δ' phase.