Recovery of ultrasonic third harmonic amplitude changes in sodium chloride following small plastic deformation
- 1 April 1970
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine
- Vol. 21 (172) , 723-734
- https://doi.org/10.1080/14786437008238458
Abstract
A recovery with time of the amplitude of an ultrasonic third harmonic wave in single crystal NaCl after applying a static deforming stress has been investigated. The recovery is found to be temperature dependent with an activation energy of 0·32 ev. Simultaneous measurements of the attenuation of the fundamental wave revealed a similar recovery for which an activation energy has also been measured. A recovery of the third harmonic amplitude has also been observed following the eventual removal of the deforming stress. The kinetics of the recovery of the third harmonic amplitude and also of the fundamental wave attenuation are found to obey a t⅓ ageing law.Keywords
This publication has 9 references indexed in Scilit:
- Recovery of strain amplitude independent dislocation damping in single crystal lifActa Metallurgica, 1968
- Generation of Ultrasonic Second and Third Harmonics due to Dislocations. IIPhysical Review B, 1966
- Detector for Measurement of Ultrasonic Strain Amplitudes in SolidsReview of Scientific Instruments, 1966
- Generation of Ultrasonic Second and Third Harmonics Due to Dislocations. IPhysical Review B, 1966
- Time-Dependent Internal Friction in Deformed NaCl CrystalsJournal of the Physics Society Japan, 1965
- Recovery of damping and modulus changes following plastic deformationActa Metallurgica, 1958
- A dislocation-attraction model for the first stage of temperingActa Metallurgica, 1956
- Internal Friction and Dynamic Modulus of Cold-Worked MetalsJournal of Applied Physics, 1954
- Dislocation Theory of Yielding and Strain Ageing of IronProceedings of the Physical Society. Section A, 1949