TOUGHNESS AND HEAT TREATMENT. RELATIONSHIP IN A 2091 ALUMINIUM ALLOY L. HAUTEFEUILLE, R. RAHOUADJ, Y. BARBAUX et M. CLAVEL J. Phys. Colloques, 48 C3 (1987) C3-669-C3-675 DOI: 10.1051/jphyscol:1987377