Перегляд за автором "Petchenko, A.M."

Результати 1-7 з 7

Dynamic damping of dislocations with phonons in Kbr single crystals

Petchenko, A.M.; Petchenko, G.A. (Functional Materials, 2006)

The damped dislocation resonance in KBr crystals has been studied using the pulse echo method in the frequency range 7.5 to 217.5 MHz and temperature range 77-300 K. In samples with per-deformation 0.23 and 0.5% the ...
Effect of crystal pre-straining on phonon damping of dislocations

Petchenko, A.M.; Petchenko, G.A. (Functional Materials, 2008)

The damped dislocation resonance in KBr crystals at 0.75 % residual strain has been studied in the 77 to 300 K temperature range using the pulsed echo technique. The sample strain change has been found to influence ...
Features of resonance absorption of longitudinal ultrasound in strained crystals KBr at temperature variations

Petchenko, A.M.; Petchenko, G.A. (Functional Materials, 2007)

The frequency dependence of a dislocation damping decrement of ultrasound in KBr single crystals preliminary strained up to 1 % in the temperature range 77-300 K and frequency range 7.5-217.5 MHz has been investigated. The ...
Influence of elastic stresses and temperature on the dislocation unpinning from the stoppers in KCl crystals

Petchenko, G.A.; Petchenko, A.M. (Functional Materials, 2015)

Impulse echo-method was applied to investigate, in the temperature range from 300 to 430 K at 7.5 MGz frequency, the dislocation absorption αd(σ) in KCl crystals as a function of statistic loading in the quasi-elastic ...
Study of martensite in hydraulically pressed 60C2A steel by internal friction method

Aleksandrov, N.G.; Petchenko, A.M.; Rokhmanov, N.Ya. (Functional Materials, 2004)

Thin structure changes in martensitic state of 60C2A steel have been studied using acoustic spectroscopy, optical microscopy and X-ray one. The hydraulic pressing followed by aging and quenching of the specimens has been ...
The dislocation resonance absorption of ultrasoundin KBr crystals at low temperatures

Petchenko, G.A.; Petchenko, A.M. (Functional Materials, 2009)

The frequency spectra of ultrasound dislocation losses in KBr single crystals with different dislocations density Λ have been researched at fixed temperatures in the T = 300-77 K interval. It is found that at any T = const ...
The study of the dislocation resonance in LiF crystals under the influence of the low-dose X-irradiation

Petchenko, G.A.; Petchenko, A.M. (Functional Materials, 2010)

Результати 1-7 з 7

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Перегляд за автором "Petchenko, A.M."

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