| Numéro |
J. Phys. Colloques
Volume 42, Numéro C5, Octobre 1981
ICIFUAS-7Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids |
|
|---|---|---|
| Page(s) | C5-1031 - C5-1036 | |
| DOI | https://doi.org/10.1051/jphyscol:19815159 | |
ICIFUAS-7
Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 42 (1981) C5-1031-C5-1036
DOI: 10.1051/jphyscol:19815159
1 Vacuumschmelze GMBH, D-6450 Hanau, F.R.G.
2 Institut Dr. R. Straumann AG, CH-4437 Waldenburg, Switzerland
Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 42 (1981) C5-1031-C5-1036
DOI: 10.1051/jphyscol:19815159
INFLUENCE OF THE THERMOELASTIC MARTENSITIC TRANSFORMATION ON THE ELASTIC AND ANELASTIC PROPERTIES OF β1-CuAlNi ALLOYS
G. Hausch1 et E. Török21 Vacuumschmelze GMBH, D-6450 Hanau, F.R.G.
2 Institut Dr. R. Straumann AG, CH-4437 Waldenburg, Switzerland
Abstract
The sound velocities of a Cu-14 wt. % Al-4.1 wt. % Ni single crystal have been measured from 77 K to 573 K. A softening of the shear elastic constant C' = (C11 -C12) / 2 is observed. For a polycrystalline specimen of the same composition the temperature dependence of Young's modulus, E, and of the internal friction, Q-1, has been measured. The internal friction shows a peak during the martensitic transformation and an enhanced damping capacity in the transformed state. Transmission electron micrographs show a complex microstructure indicating precipitation of the ω-phase.