| Numéro |
J. Phys. Colloques
Volume 46, Numéro C10, Décembre 1985
Eighth International Conference on Internal Friction and Ultrasonic Attenuation in Solids
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|---|---|---|
| Page(s) | C10-621 - C10-624 | |
| DOI | https://doi.org/10.1051/jphyscol:198510136 | |
Eighth International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 46 (1985) C10-621-C10-624
DOI: 10.1051/jphyscol:198510136
Metallurgy Department, University of Missouri-Rolla, Rolla, MO 65401. U.S.A.
J. Phys. Colloques 46 (1985) C10-621-C10-624
DOI: 10.1051/jphyscol:198510136
NONLINEAR INTERNAL FRICTION AND THE FORMATION OF MARTENSITE
MANFRED WUTTIG, CHI-YUAN LEI and IN-CHEOL HWANGMetallurgy Department, University of Missouri-Rolla, Rolla, MO 65401. U.S.A.
Abstract
The nonlinear internal friction was measured in an In-Tl (24.0 at% Tl) and a Cu-Al-Ni (14 wt% Al, 3 wt% Ni) single crystal. It was found that both the linear and nonlinear damping vary strongly as the martensitic transformation temperature is approached. The data are interpreted in terms of pretransformation fluctuations which for the In-Tl alloy are characterized by an activation energy of .63 eV.