VARIATION IN STRUCTURE AND PROPERTIES IN AN Al-Li-Cu-Mg-Zr ALLOY PRODUCED BY EXTRUSION PROCESSING A.K. MUKHOPADHYAY, H.M. FLOWER et T. SHEPPARD J. Phys. Colloques, 48 C3 (1987) C3-219-C3-228 DOI: 10.1051/jphyscol:1987325