Numéro
J. Phys. Colloques
Volume 42, Numéro C5, Octobre 1981
ICIFUAS-7
Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
Page(s) C5-1001 - C5-1005
DOI https://doi.org/10.1051/jphyscol:19815154
ICIFUAS-7
Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids

J. Phys. Colloques 42 (1981) C5-1001-C5-1005

DOI: 10.1051/jphyscol:19815154

ANELASTIC EFFECTS IN SINGLE CRYSTALS OF β-Cu-Zn AND β-Cu-Zn-Al ALLOYS

A. Ghilarducci de Salva1, 2 et M. Ahlers1

1  Centro Atomico Bariloche, Instituto Balseiro, 8400 S.C. de Bariloche, Argentina - Comision Nacional de Energia Atomica
2  Institut National Polytechnique de Grenoble, France


Abstract
Quenching and aging treatments strongly affect the properties of β brass (1-3) and of the martensitic transformation (4-5) which occurs in these alloys and which has found widespread interest owing to the shape memory effect associated with it (6). Aging effects have seen observed at room temperature and below, where the β phase is long range ordered. The long range order has a strong influence on the atomic mobility (7-8). Since the degree of order in β brass is sufficiently high only at low temperature where tracer diffusion measurements are difficult to perform, the internal friction technique constitutes an important additional source to study atom mobilities at low temperatures. In this paper anelastic effects observed after quenching β-Cu-Zn and Cu-Zn-Al alloys are reported and the information which can deduced on the type and mobility of the defects responsible are briefly discussed. More details can be found in (9-10).