| Numéro |
J. Phys. Colloques
Volume 48, Numéro C3, Septembre 1987
4th International Aluminium Lithium Conference
|
|
|---|---|---|
| Page(s) | C3-669 - C3-675 | |
| DOI | https://doi.org/10.1051/jphyscol:1987377 | |
4th International Aluminium Lithium Conference
J. Phys. Colloques 48 (1987) C3-669-C3-675
DOI: 10.1051/jphyscol:1987377
1 Université de Technologie de Compiègne, CNRS-UA 849, B.P. 233, Rue P. de Roberval, F-60206 Compiègne Cedex, France
2 Aérospatiale, Laboratoire Central, 12, Rue Pasteur, F-92152 Suresnes Cedex, France
J. Phys. Colloques 48 (1987) C3-669-C3-675
DOI: 10.1051/jphyscol:1987377
TOUGHNESS AND HEAT TREATMENT. RELATIONSHIP IN A 2091 ALUMINIUM ALLOY
L. HAUTEFEUILLE1, R. RAHOUADJ1, Y. BARBAUX2 et M. CLAVEL11 Université de Technologie de Compiègne, CNRS-UA 849, B.P. 233, Rue P. de Roberval, F-60206 Compiègne Cedex, France
2 Aérospatiale, Laboratoire Central, 12, Rue Pasteur, F-92152 Suresnes Cedex, France
Abstract
The 2091 alloy was tested to determine toughness levels with respect to heat treatment. A drastic decrease in fracture toughness was observed as a function of heat treatment. The occurence of such a toughness drop was clearly related to fracture modes : . Transgranular and intergranular precipitation and deformation modes were studied. The loss of grain boundary strength could be explained by the precipitation of the quasi crystalline phase T2