| 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) | C10-391 - C10-394 | |
| DOI | https://doi.org/10.1051/jphyscol:19851088 | |
Eighth International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 46 (1985) C10-391-C10-394
DOI: 10.1051/jphyscol:19851088
Mechanical Engineering Department, Texas A&M University, College Station, Texas 77843, U.S.A.
J. Phys. Colloques 46 (1985) C10-391-C10-394
DOI: 10.1051/jphyscol:19851088
MECHANICAL DAMPING AT HIGH TEMPERATURES IN ALUMINIDES
A. WOLFENDEN, M.R. HARMOUCHE, J.T. HARTMAN and Jr.Mechanical Engineering Department, Texas A&M University, College Station, Texas 77843, U.S.A.
Abstract
Measurements of the internal friction Q-1 and Young's Modulus E of alternative materials for high temperature service are reported. The technique used is the PUCOT, where E and Q-1 for the ordered 82 FeAl were measured as a function of temperature T and strain amplitude ε , respectively. It is shown that the Granato-Luecke theory predicts low mobile dislocation densities. E decreases linearly with T such that 0.080 ≤ dE/dT ≤ 0.095 GPa/K in the temperature range 300-998 K.