J. Phys. Colloques
Volume 46, Numéro C10, Décembre 1985Eighth International Conference on Internal Friction and Ultrasonic Attenuation in Solids
|Page(s)||C10-227 - C10-230|
J. Phys. Colloques 46 (1985) C10-227-C10-230
ANOMALOUSLY AMPLITUDE-DEPENDENT INTERNAL-FRICTION PEAKS IN ALUMINIUM CONTAINING 0.12 wt % OF MAGNESIUMQ.F. FANG and T.S. KÊ
Institute of Solid State Physics, Academia Sinica, Hefei, China
Anomalously amplitude-dependent internal-friction peaks were observed in Al-0.12 wt % Mg after the specimen was subjected to an ingenious procedure of mechanical and thermal treatment. The height of the peak can reach 0.1 which is one order of magnitude higher than those observed previously. Two types of amplitude-dependent internal-friction peaks were observed. Salient features of the co-existing strain-aging internal friction peak, the temperature internal-friction peak, and the amplitude internal-friction peak were systematically studied.