| Numéro |
J. Phys. Colloques
Volume 48, Numéro C3, Septembre 1987
4th International Aluminium Lithium Conference
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|---|---|---|
| Page(s) | C3-439 - C3-446 | |
| DOI | https://doi.org/10.1051/jphyscol:1987350 | |
4th International Aluminium Lithium Conference
J. Phys. Colloques 48 (1987) C3-439-C3-446
DOI: 10.1051/jphyscol:1987350
1 Imperial College of Science and Technology, Department of Materials, GB-London, SW7 2BP, Great-Britain
2 University of Southampton, Engineering Materials Department, GB-Southampton, SO9 5NH, Great-Britain
3 University of Manchester/UMIST, Department of Metallurgy and Materials Science, GB-Manchester, M60 1QD, Great-Britain
J. Phys. Colloques 48 (1987) C3-439-C3-446
DOI: 10.1051/jphyscol:1987350
THERMAL ANALYSIS STUDY OF THE PRECIPITATION REACTIONS IN Al-Li-Cu-Mg-Zr ALLOYS
A.K. MUKHOPADHYAY1, C.N.J. TITE2, H.M. FLOWER1, P.J. GREGSON2 et F. SALE31 Imperial College of Science and Technology, Department of Materials, GB-London, SW7 2BP, Great-Britain
2 University of Southampton, Engineering Materials Department, GB-Southampton, SO9 5NH, Great-Britain
3 University of Manchester/UMIST, Department of Metallurgy and Materials Science, GB-Manchester, M60 1QD, Great-Britain
Abstract
Differential Scanning Calorimetry has been used to study the phase transformations in Al-Li-Cu-Mg-Zr alloys conforming to the commercial 8090 and 8091 specifications, together with selected binary and ternary alloys of similar solute concentrations. The evidence supports the existence of GP zones in the binary Al-Li system and demonstrates that their formation is affected by the presence of other solutes. Lithium slows down the precipitation of Al-Cu-Mg GP zones and of S phase.