Search Results - "Katzarov, Ivaylo"

Quantum and isotope effects on hydrogen diffusion, trapping and escape in iron by Paxton, Anthony T., Katzarov, Ivaylo H.

“…We calculate the rate coefficient as a function of temperature for lattice diffusion of hydrogen and its isotopes in α-iron; and also for trapping and escape…”
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The influence of hydrogen on plasticity in pure iron—theory and experiment by Gong, Peng, Katzarov, Ivaylo H., Nutter, John, Paxton, Anthony T., Rainforth, W. Mark

“…Tensile stress relaxation is combined with transmission electron microscopy to reveal dramatic changes in dislocation structure and sub structure in pure α -Fe…”
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Effect of Microstructure on the Mechanical Response of Hydrogen-Charged Pure Iron by Yanachkov, Boris, Lyutov, Lyudmil, Katzarov, Ivaylo, Drenchev, Ludmil, Kolev, Krasimir

“…In this paper, we investigate how two different microstructures in pure iron affect the dislocation mobility in hydrogen-charged and non-charged samples by…”
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Fully quantum mechanical calculation of the diffusivity of hydrogen in iron using the tight-binding approximation and path integral theory by Katzarov, Ivaylo H., Pashov, Dimitar L., Paxton, Anthony T.

“…We present calculations of free energy barriers and diffusivities as functions of temperature for the diffusion of hydrogen in alpha -Fe. This is a fully…”
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Unveiling the Mechanisms of High-Temperature 1/2[111] Screw Dislocation Glide in Iron–Carbon Alloys by Katzarov, Ivaylo Hristov, Drenchev, Ljudmil Borisov

“…We have developed a self-consistent model for predicting the velocity of 1/2[111] screw dislocation in binary iron–carbon alloys gliding by a high-temperature…”
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Microscopic origin of channeled flow in lamellar titanium aluminide by Katzarov, Ivaylo H, Paxton, Anthony T

“…We employ a quantum mechanical bond order potential in an atomistic simulation of channeled flow. We show that the original hypothesis that this is achieved by…”
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Hydrogen suppression of dislocation cell formation in micro and nano indentation of pure iron single crystals by Gong, Peng, Katzarov, Ivaylo, Nutter, John, Paxton, Anthony T., Wynne, Bradley, Rainforth, W. Mark

“…The influence of hydrogen on dislocation mobility in pure single crystal iron subjected to micro- and nanoindentation testing perpendicular to the (100) plane…”
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Atomistic studies of ⟨101] screw dislocation core structures and glide in γ-TiAl by Katzarov, I.H., Paxton, A.T.

“…The core structure of superdislocations in L1 0 TiAl was investigated with a view to clarifying their dissociation abilities and the mechanisms by which they…”
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Atomistic study of ordinary ½〈110] screw dislocations in single-phase and lamellar γ-TiAl by Katzarov, Ivaylo Hristov, Cawkwell, Marc, Paxton, Anthony T, Finnis, Michael W

“…Computer simulation of the core structure and glide of ordinary ½〈110] screw dislocations in single-phase L10 TiAl and in two lamellae forming twin…”
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The influence of hydrogen on plasticity in pure iron-theory and experiment by Gong, Peng, Katzarov, Ivaylo H, Paxton, Anthony T, Rainforth, W. Mark

“…Tensile stress relaxation is combined with transmission electron microscopy to reveal dramatic changes in dislocation structure and sub structure in pure alpha…”
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The influence of hydrogen core force shielding on dislocation junctions in iron by Yu, Haiyang, Katzarov, Ivaylo H, Paxton, Anthony T, Cocks, Alan C. F, Tarleton, Edmund

“…Phys. Rev. Materials 4, 033607 (2020) The influence of hydrogen on dislocation junctions was analysed by incorporating a hydrogen dependent core force into…”
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Quantum rate theory of the trapping of hydrogen and deuterium by a vacancy in iron by Katzarov, Ivaylo H, Paxton, Anthony T

“…We apply quantum rate theory to calculate the transition rates as hydrogen or deuterium atoms escape from a vacancy trap in iron into a neighbouring metastable…”
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Is the pinning of ordinary dislocations in gamma-TiAl intrinsic or extrinsic in nature? A combined atomistic and kinetic Monte Carlo approach by Katzarov, Ivaylo H, Paxton, Anthony T

“…We address the question of the observed pinning of 1/2 <110] ordinary screw dislocations in gamma-TiAl which leads to the characteristic trailing of dipoles in…”
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