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1.
L. S. Zborzhil S. B. Ainbinder V. I. Betekhtin A. I. Slutsker K. I. Alksne A. I. Petrov A. A. Dzenis 《Mechanics of Composite Materials》1971,7(5):817-820
Small-angle x-ray scattering has been used to obtain a quantitative estimate of the concentration and size of the submicrocracks in Kapron and polypropylene equally extended at 1 and 1500 atm. Direct evidence of the retarding effect of pressure on fracture development has been obtained.Institute of Polymer Mechanics, Academy of Sciences of the Latvian SSR, Riga: Ioffe Physicotechnical Institute, Academy of Sciences of the USSR, Leningrad. Translated from Mekhanika Polimerov, No. 5, pp. 917–921, September–October, 1971. 相似文献
2.
A. I. Slutsker V. I. Betekhtin A. G. Kadomtsev O. V. Tolochko O. V. Amosova 《Physics of the Solid State》2008,50(2):290-294
Magnetic and structural properties of an amorphous alloy based on iron are investigated. The properties and state of the alloy are changed under hydrostatic pressure of up to 1.3 GPa. An increase in the pressure leads to a linear increase in the maximum magnetic induction and a linear decrease in the remanence. Two nanopore fractions with average sizes of ~20 and 150 nm are revealed in the alloy with the use of small-angle x-ray diffraction. The application of the pressure decreases the size of nanopores and increases the average distance between their boundaries, i.e., increases the average sizes of continuity regions in the alloy. It is established that the relative change in the magnetic characteristics is linearly related to the change in the size of the continuity regions in the alloy. Upon extrapolation to zero nanoporosity, the remanence reduces to zero. The inference is made that the nanopores play a dominant role (as compared to other structural defects) in the magnetic properties of the alloy. 相似文献
3.
V. I. Betekhtin A. G. Kadomtsev V. Sklenicka I. Saxl 《Physics of the Solid State》2007,49(10):1874-1877
The presence of nanopores formed during the equal-channel angular pressing of aluminum is revealed using small-angle x-ray scattering. The parameters of nanopores are determined, and a correlation between the level of nanoporosity and the fraction of high-angle grain boundaries is found. The data obtained indicate that the level of nanoporosity can affect the tensile durability of fine-crystalline aluminum in the creep mode. The data on the regularities in the development of nanopores under deformation of the fine-crystalline aluminum-based alloy in the superplasticity mode are obtained. 相似文献
4.
Experimental data on the development and partial healing of microscopic cracks and pores in loaded crystalline materials are considered. An analysis of the data indicates that fracture development has a number of specific features depending on the state of the materials and the testing conditions and is a kinetic thermal fluctuation process occurring virtually throughout the entire time of loading. 相似文献
5.
Under uniaxial tension, the lifetimes of polymers under hydrostatic pressure are longer than under atmospheric pressure. This effect is attributed to a change in the failure mechanism under pressure owing to retardation of the free-radical chain reaction of breakage of the macromolecules under omnidirectional compression.A. F. Ioffe Physicotechnical Institute, Academy of Sciences of the USSR, Leningrad. Translated from Mekhanika Polimerov, No. 2, pp. 207–213, March–April, 1976. 相似文献
6.
The kinetics of indentation of a solid (viz., the dependence of the indenter intrusion depth on the time, force, and temperature),
is analyzed theoretically taking into account quantum effects in the atomic dynamics of solids. The experimental study of
the temperature dependence of the boron microhardness reveals qualitative and quantitative agreement with calculated dependences.
A possible manifestation of quantum (tunnel) effects in the boron microindentation kinetics is predicted. 相似文献
7.
V. I. Betekhtin Yu. R. Kolobov O. A. Golosova B. K. Kardashev A. G. Kadomtsev M. V. Narykova M. B. Ivanov T. N. Vershinina 《Technical Physics》2013,58(10):1432-1436
The elastoplastic properties (elastic modulus, amplitude-independent damping ratio, microplastic flow stress) of a Ti-26Nb-7Mo-12Zr titanium β alloy are determined using an acoustic resonance method. The effect of the strain during thermomechanical treatment on the structural features of the micro-crystalline alloy and, hence, its elastoplastic properties is analyzed. 相似文献
8.
Korsukov V. E. Ankudinov A. V. Betekhtin V. I. Butenko P. N. Verbitskii V. N. Gilyarov V. L. Korsukova M. M. Narykova M. V. Obidov B. A. 《Physics of the Solid State》2019,61(4):585-591
Physics of the Solid State - The micro- and nanoreliefs of the loaded surfaces of a Fe77Ni1Si9B13 metal glass are probed via scanning tunneling and atomic force microscopies, scanning electron... 相似文献
9.
V. I. Betekhtin E. L. Gyulikhandanov A. G. Kadomtsev A. Yu. Kipyatkova O. V. Tolochko 《Physics of the Solid State》2000,42(8):1460-1464
The regularities of annealing of an excess free volume in amorphous alloys have been investigated. It is shown that the mechanism for the healing of excess free volume is associated with the viscous flow. It is revealed that a decrease in this volume at high temperatures or pressures leads to an increase in the strength and provides an explanation for the features of its temperature dependence. The decrease in the excess free volume is enhanced under a tensile load. 相似文献
10.
Korsukov V. E. Ankudinov A. V. Betekhtin V. I. Butenko P. N. Verbitskii V. N. Hilarov V. L. Hilarov I. V. Knyazev S. A. Korsukova M. M. Obidov B. A. 《Physics of the Solid State》2020,62(12):2249-2257
Physics of the Solid State - The dynamics of changes in the surface morphology of recrystallized tungsten foil under the action of uniaxial tension was studied in situ by the methods of low-energy... 相似文献