P
P.P. Pal-Val
Researcher at National Academy of Sciences of Ukraine
Publications - 8
Citations - 55
P.P. Pal-Val is an academic researcher from National Academy of Sciences of Ukraine. The author has contributed to research in topics: Atmospheric temperature range & Dislocation. The author has an hindex of 3, co-authored 8 publications receiving 54 citations.
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Unusual Young׳s modulus behavior in ultrafine-grained and microcrystalline copper wires caused by texture changes during processing and annealing
P.P. Pal-Val,Yu. N. Loginov,S. L. Demakov,A. G. Illarionov,V. D. Natsik,L. N. Pal-Val,A.A. Davydenko,A. P. Rybalko +7 more
TL;DR: In this paper, the effect of annealing on the dynamic Young-s modulus E of ultrafine-grained and microcrystalline (MC) copper obtained by combined severe plastic deformation (SPD) including repeated hydrostatic extrusion and drawing (UFG copper) or only repeated drawing (MC copper) is investigated.
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Comparative study of the low-temperature acoustic properties of CuO and YBa2Cu3Ox ceramics
TL;DR: In this article, a comparative study of ultrasound velocity and absorption in the ceramics CuO and YBa2Cu3Ox (x=6.95 and 6.3) in the temperature range 5-310 K and the frequency interval 47-370 kHz is made.
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Slip in a {112} bicrystal with asymmetrical orientations of the loading axis
TL;DR: In this paper, the compatibility stresses arising due to elastic anisotropy of the component single crystals are explained to a large extent by the compatibility forces arising from the anisotropic lattice.
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Low-temperature dislocation internal friction in crystals
V. D. Natsik,P.P. Pal-Val +1 more
TL;DR: In this paper, an analysis of the experimental and theoretical results related to studies of low-temperature dislocation mobility by the internal friction method is given, and it is shown that a number of unusual experimental results obtained at low and very low temperatures might be explained in the framework of existing theories modified by taking into account the influence of quantum effects and viscous drag on the overcoming by dislocations of various potential barriers in crystals.
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Effect of superconducting transition on temperature dependence of elastic moduli in niobium: Superposition of quasistatic and dynamic effects
TL;DR: In this paper, low-temperature elastic properties of niobium crystals of different purity and orientation are investigated in normal (N) and superconducting (S) states.