ULTRASONIC ATTENUATION MEASUREMENTS DURING ROOM TEMPERATURE CREEP WITH TRESS DECREMENTS IN 5N ALUMINIUM A. VINCENT, S. DJEROUD and R. FOUGERES J. Phys. Colloques, 48 C8 (1987) C8-203-C8-208 DOI: 10.1051/jphyscol:1987828