| Numéro |
J. Phys. Colloques
Volume 42, Numéro C5, Octobre 1981
ICIFUAS-7Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids |
|
|---|---|---|
| Page(s) | C5-929 - C5-934 | |
| DOI | https://doi.org/10.1051/jphyscol:19815143 | |
ICIFUAS-7
Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 42 (1981) C5-929-C5-934
DOI: 10.1051/jphyscol:19815143
Institut de Génie Atomique, Swiss Federal Institute of Technology, Ecublens CH-1015 Lausanne, Switzerland
Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 42 (1981) C5-929-C5-934
DOI: 10.1051/jphyscol:19815143
CHARACTERISTIC INTERNAL FRICTION SPECTRUM OF GREY CAST IRON
P. Millet, R. Schaller et W. BenoitInstitut de Génie Atomique, Swiss Federal Institute of Technology, Ecublens CH-1015 Lausanne, Switzerland
Abstract
The low temperature internal friction spectrum in grey cast iron is the same as in pure graphite. This fact tends to show that the graphite precipitates are responsible for the damping capacity of grey cast iron. As the hardening properties are due to the matrix, it is possible to obtain grey cast iron samples, which present together good mechanical properties and a good damping capacity. The study of the internal friction spectrum shows that it is composed of two or three peaks and that its evolution is mainly due to a phase transformation of graphite between 200 and 270K.