INTERNAL FRICTION ASSOCIATED WITH GRAIN BOUNDARY SEGREGATION IN Al-Mg AND Al-Na ALLOYS AFTER QUENCHING AND ANNEALING S. P. WU et L. D. ZHANGJ. Phys. Colloques, 51 C1 (1990) C1-367-C1-372DOI: https://doi.org/10.1051/jphyscol:1990158