| Numéro |
J. Phys. Colloques
Volume 48, Numéro C3, Septembre 1987
4th International Aluminium Lithium Conference
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|---|---|---|
| Page(s) | C3-497 - C3-504 | |
| DOI | https://doi.org/10.1051/jphyscol:1987357 | |
4th International Aluminium Lithium Conference
J. Phys. Colloques 48 (1987) C3-497-C3-504
DOI: 10.1051/jphyscol:1987357
1 Cégédur-Péchiney, Centre de Recherche et Développement, B.P. 27, F-38340 Voreppe, France
2 Laboratoire de Thermodynamique et de Physico Chimie Métallurgiques, E.N.S.E.E.G., B.P. 75, F-38402 Saint-Martin-d'Hères Cedex, France
J. Phys. Colloques 48 (1987) C3-497-C3-504
DOI: 10.1051/jphyscol:1987357
STRUCTURE OF STABLE INTERMETALLIC COMPOUNDS OF THE Al-Li-Cu-(Mg) AND Al-Li-Zn-(Cu) SYSTEMS
B. DUBOST1, M. AUDIER2, P. JEANMART1, J.-M. LANG1 et P. SAINFORT11 Cégédur-Péchiney, Centre de Recherche et Développement, B.P. 27, F-38340 Voreppe, France
2 Laboratoire de Thermodynamique et de Physico Chimie Métallurgiques, E.N.S.E.E.G., B.P. 75, F-38402 Saint-Martin-d'Hères Cedex, France
Abstract
The results of a thorough structural study of crystalline intermetallic compounds within the Al-Li-(Cu,Mg,Zn) system are given. Characteristic morphologies of these ternary or quaternary phases are exhibited by concentrated alloys or large single crystals. Typical X-ray powder diffraction data, selected area electron diffraction patterns and high resolution electron microscopy images are shown, allowing unambiguous structure identification of two new intermetallic compounds designated Z and τ stable respectively in the Al-Li-Cu-Mg and Al-Li-Zn-(Cu) systems. The latter are found to have common structural features with the R-Al5CuLi3 and T-(Al,Zn)2Li isomorphous phases.