| Numéro |
J. Phys. Colloques
Volume 48, Numéro C3, Septembre 1987
4th International Aluminium Lithium Conference
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|---|---|---|
| Page(s) | C3-701 - C3-707 | |
| DOI | https://doi.org/10.1051/jphyscol:1987381 | |
4th International Aluminium Lithium Conference
J. Phys. Colloques 48 (1987) C3-701-C3-707
DOI: 10.1051/jphyscol:1987381
Institut de Mécanique de Grenoble, B.P. 68, F-38402 Saint-Martin-d'Hères Cedex, France
J. Phys. Colloques 48 (1987) C3-701-C3-707
DOI: 10.1051/jphyscol:1987381
LOW CYCLE FATIGUE OF BINARY Al-Li ALLOY : I-EXPERIMENTAL RESULTS AND MECHANICAL MODELIZATION
S. HAN, A. TOURABI et B. WACKInstitut de Mécanique de Grenoble, B.P. 68, F-38402 Saint-Martin-d'Hères Cedex, France
Abstract
Three types of binary aluminium-lithium alloy are tested : the solid solution at 0.7 wt % Li and alloys at 2.5 wt % Li with under- and overcritical δ' precipitates. Symmetrical torsion tests are run on tube shape specimens. The results display mechanical hysteresis and hardening-softening ; for one alloy some instabilities appear. A temporary modelization is made in the frame of the discrete memory constitutive scheme.