Numéro
J. Phys. Colloques
Volume 43, Numéro C4, Décembre 1982
ICOMAT-82
International Conference on Martensitic Transformations
Page(s) C4-609 - C4-614
DOI https://doi.org/10.1051/jphyscol:1982496
ICOMAT-82
International Conference on Martensitic Transformations

J. Phys. Colloques 43 (1982) C4-609-C4-614

DOI: 10.1051/jphyscol:1982496

ACOUSTIC EMISSION DURING MARTENSITIC TRANSFORMATION OF Cu-Zn-Al

D. Maeder, P. Ryser, B. Sanderson, A. Sillou et A. Steiner

Département de Physique Nucléaire et Corpusculaire, Université de Genève, Switzerland


Abstract
The characteristic transformation temperatures of small samples of a CuZnAl alloy were determined by resistivity measurements. Ring-down counting measurements of acoustic emission during temperature cycling of these samples show distinctive maxima occurring near Ms(T < 0) and Af(T > 0). Counting rates depend strongly on mechanical/thermal sample history but are always proportional to temperature variation rate. Detailed event recordings reveal burst-like signals of widely fluctuating amplitudes generated by source processes of very short duration. Their characteristics are little affected by different rates of temperature variation.