GRAIN REFINEMENT AND SUPERPLASTICITY IN A LITHIUM-CONTAINING Al-Mg ALLOY BY THERMOMECHANICAL PROCESSING S.J. HALES, S.B. OSTER, B.W. SANCHEZ et T.R. McNELLEY J. Phys. Colloques, 48 C3 (1987) C3-285-C3-291 DOI: 10.1051/jphyscol:1987332