Recovery of Internal Friction in Aluminum after Plastic Deformation
- 1 May 1960
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 31 (5) , 928-931
- https://doi.org/10.1063/1.1735721
Abstract
The internal friction in polycrystalline, super purity aluminum has been measured during and after creep under constant load by the ultrasonic pulse method. The increase of internal friction was found to be independent of frequency in the measured range (2.5 to 12 Mc). The room temperature recovery of internal friction after unloading could be described by the formula: Δα=C1/ (t+C2)C3. Typical values of the constants C2 and C3 are 10 sec. and 0.6, respectively. The experimental results are discussed in terms of the Weertman-Salkovitz theory of low-amplitude internal friction.This publication has 11 references indexed in Scilit:
- Evidence for Dislocation Breakaway in Pure AluminumPhysical Review B, 1958
- Frequency Dependence of Ultrasonic Attenuation and Velocity on Plastic DeformationJournal of Applied Physics, 1957
- Ultrasonic Attenuation Caused by Thermoelastic Heat FlowJournal of Applied Physics, 1956
- Theory of Mechanical Damping Due to DislocationsJournal of Applied Physics, 1956
- Sensitivity of Ultrasonic Attenuation and Velocity Changes to Plastic Deformation and Recovery in AluminumJournal of Applied Physics, 1956
- Some observations on the internal friction of polycrystalline aluminium during the early stages of creepActa Metallurgica, 1955
- On the interpretation of “low-temperature” recovery phenomena in cold-worked metalsActa Metallurgica, 1955
- Ultrasonic Attenuation in Zinc Single Crystals While Undergoing Plastic DeformationPhysical Review B, 1955
- The internal friction of dilute alloys of leadActa Metallurgica, 1955
- XLVIII. The effect of small amounts of cold-work on Young's Modulus of copperJournal of Computers in Education, 1953