| Numéro |
J. Phys. Colloques
Volume 43, Numéro C4, Décembre 1982
ICOMAT-82International 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
Département de Physique Nucléaire et Corpusculaire, Université de Genève, Switzerland
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. SteinerDépartement 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.