Accès gratuit
Numéro
J. Phys. IV France
Volume 01, Numéro C4, Novembre 1991
EUROPEAN SYMPOSIUM ON MARTENSITIC TRANSFORMATION AND SHAPE MEMORY PROPERTIES
Page(s) C4-265 - C4-269
DOI http://dx.doi.org/10.1051/jp4:1991440
EUROPEAN SYMPOSIUM ON MARTENSITIC TRANSFORMATION AND SHAPE MEMORY PROPERTIES

J. Phys. IV France 01 (1991) C4-265-C4-269

DOI: 10.1051/jp4:1991440

ULTRASONIC ATTENUATION DURING THE MARTENSITIC TRANSFORMATION IN Cu-Zn-Al SHAPE MEMORY ALLOYS

Ll. MAÑOSA1, J.L. MACQUERON2 and J.C. BABOUX2

1  Dept. Estructura i constituents de la Matèria, Facultat de Fisica, Universitat de Barcelona, Diagonal 645, Barcelona, Catalonia, Spain
2  Laboratoire de Traitement du Signal et Ultrasons, INSA, Bât 502, 20 avenue Albert Einstein, Villeurbanne, France


Abstract
We report measurements of the attenuation of longitudinal elastic waves, carried out using a broad-band immersion pulse-echo technique. The ultrasonic attenuation has been measured as a function of temperature and frequency during the martensitic transformation of monocrystalline and polycrystalline Cu-Zn-Al alloys. It has been shown that the most likely mechanism producing ultrasonic attenuation is the scattering of the ultrasonic waves by regions with different acoustic impedances.



© EDP Sciences 1991