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Numéro
J. Phys. IV France
Volume 01, Numéro C4, Novembre 1991
EUROPEAN SYMPOSIUM ON MARTENSITIC TRANSFORMATION AND SHAPE MEMORY PROPERTIES
Page(s) C4-123 - C4-128
DOI http://dx.doi.org/10.1051/jp4:1991418
EUROPEAN SYMPOSIUM ON MARTENSITIC TRANSFORMATION AND SHAPE MEMORY PROPERTIES

J. Phys. IV France 01 (1991) C4-123-C4-128

DOI: 10.1051/jp4:1991418

CHARACTERISATION OF THE MICROSTRUCTURAL STATE OF A CuZnAl INDUSTRIAL SHAPE MEMORY ALLOY

L. BUFFARD1, P. CHARBONNIER1, C. ROUCAU2 and J. JAUD2

1  IMAGO SA, Athelia 1, F-13600 La Ciotat, France
2  CEMES-LOE, CNRS, 29 rue Jeanne Marvig, BP 4347, F-31055 Toulouse, France


Abstract
The thermomecanical treatments used for the industrial production have a great effect on the transformation temperatures of the CuZnAl shape memory elements. We characterize the microstructural state of samples submitted to several kinds of thermomecanical treatments. We used the transmission electron microscopy and X-ray diffraction. A particular effort was made on the observation of the alloy long range order state. The observations show different default structures and different long range ordered domain sizes according to the kind of treatment. The order state is characterized by a size and a number of long range ordered domains B2 and L21, but it seems to be necessary to estimate the short range order degree.



© EDP Sciences 1991