Letters on Materials

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When a domain wall moves through a magnetic defect region (marked with dashed lines), a localized nonlinear wave (magnetic breather) is excited.

Localized Magnetic Inhomogeneities Generation on Defects, as a New Channel of Damping for a Moving Domain Wall

A.M. Gumerov, E.G. Ekomasov, R.V. Kudryavtsev, M.I. Fakhretdinov

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Year: 2018

Volume: 8 Issue: 3

Pages: 299-304

During the cyclic deformation the energy dissipation zone covers a significant amount of the titanium sample and the zirconium alloy one in the ultrafine-grained state. For the coarse-grained and fine-grained states the growth of thermal energy has a localized character in the active zone of the samples. Cyclic loading of the titanium sample and the zirconium alloy in the ultrafine-grained state is accompanied by a qualitative change in the energy absorption dissipation process.

Failure mechanisms of titanium VT1-0 and zirconium alloy E110 in ultrafine-grained, fine-grained and coarse-grained states under cyclic loading in gigacycle regime

O.B. Naimark, Y.P. Sharkeev, A.M. Mairambekova, M.V. Bannikov, A.Y. Eroshenko, A.I. Vedernikova

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Year: 2018

Volume: 8 Issue: 3

Pages: 317-322

Neutronographic research (T=300 K) having been carried out on highly doped Zn0.9Ni0.1S, Zn0.95Fe0.05Se, Zn0.99V0.01Se cubic crystals of diluted magnetic semiconductors shows that unhomogeneously distorted nano volumes, of ellipsoidal forms emerged at small dopant content in initial lattice, oriented to crystallographic directions which depending on Jahn-Teller ions type, are transformed to two-types form, leading to loss of initial orientations having been ascribed by supplied describing statistics of investigated phenomena. The figure illustrates observed changes direct scheme build on processed data of diffuse contribution partitioning to scattering on Zn1-хVхSe crystals, when the longest axes of nano regions at small dopant content (х~0.001) lie previously along <111> directions (the small cell of the cube containing the unhomogeneity corresponds to the elementary cell of the ZnSe structure), the case of high level doping are assumed to be considered as damage degrees of crystallographic planes of initial lattice.

On non-uniform strains in the structure of diluted magnetic semiconductors based on Jahn-Teller 3d- ions

E.N. Maksimova, V.I. Maksimov, T.P. Surkova

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Year: 2018

Volume: 8 Issue: 3

Pages: 358-363

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A method for the construction of initial atomic models of nanocrystals with extrinsic dislocations in grain boundaries for molecular dynamics simulations is developed. The method is used to determine atomic structures and energies of grain boundaries in columnar f.c.c. nanocrystals with [112] column axis.

A method for the construction of initial structures for molecular dynamics simulations of nanocrystals with nonequilibrium grain boundaries containing extrinsic dislocations

A.A. Nazarov, R.T. Murzaev

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Year: 2018

Volume: 8 Issue: 1

Pages: 5-10

The recrystallization mechanism after ECP was deduced to be similar to that operating during conventional static annealing. The microstructural changes were explained in terms of Joule heating and similar observations for static recrystallization.

Effect of electric-current pulses on structural changes in cold rolled copper at different initial temperatures

I.S. Valeev, A.K. Valeeva

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Year: 2018

Volume: 8 Issue: 1

Pages: 100-104

Oscillations of kinetic temperature in harmonic triangular lattice with random initial velocities.

Temperature oscillations in harmonic triangular lattice with random initial velocities

V. Kuzkin, V. Tsaplin

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Year: 2018

Volume: 8 Issue: 1

Pages: 16-20

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The method of consolidation of metal powder is proposed, this method consists in applying a layer of metal powder on the surface of the detail, compressing the powder at a point between the workpiece and the electrode, and sintering at this point by electric pulse. Sequential dot by dot sintering leads to the formation of a new layer and allows to obtain bulk materials.

The features of metal powders consolidation by layer-by-layer electric discharge sintering

I.A. Elkin, V.A. Volkov, K.S. Stolbov, D.A. Kolodkin, A.A. Chulkina, A.N. Bel'tyukov

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Year: 2018

Volume: 8 Issue: 3

Pages: 335-340

Using different cold-rolled and annealing regimes different primary recrystallization texture in Fe-14%Ga was obtained. Values of magnetostriction decreased in conformity with the decrease of texture components containing easy magnetization directions.

TEXTURE FORMATION UNDER ROLLING AND PRIMARY RECRYSTALLIZATION IN Fe86Ga14 ALLOY

V.A. Milyutin, I.V. Gervasyeva

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Year: 2018

Volume: 8 Issue: 3

Pages: 341-345

The technological properties of the titanium alloy VT6 were studied. It is established that it can be successfully used in SPF/DB technology under conditions of low-temperature superplasticity at temperatures of 750-800° C. The model of the hollow blade of a three-layer structure was made from this alloy.

The study of technological properties of the titanium alloy Ti-6Al-4V. Part 2

R.V. Safiullin, M.H. Muhametrahimov, S.P. Malycheva, A.R. Safiullin, A.N. Kozlov, AV Berestov, S.A. Harin, M. Morozov

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Year: 2018

Volume: 8 Issue: 3

Pages: 329-334

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Latest articles

Localized Magnetic Inhomogeneities Generation on Defects, as a New Channel of Damping for a Moving Domain Wall

Failure mechanisms of titanium VT1-0 and zirconium alloy E110 in ultrafine-grained, fine-grained and coarse-grained states under cyclic loading in gigacycle regime

On non-uniform strains in the structure of diluted magnetic semiconductors based on Jahn-Teller 3d- ions

Selected papers

A method for the construction of initial structures for molecular dynamics simulations of nanocrystals with nonequilibrium grain boundaries containing extrinsic dislocations

Effect of electric-current pulses on structural changes in cold rolled copper at different initial temperatures

Temperature oscillations in harmonic triangular lattice with random initial velocities

Most viewed

The features of metal powders consolidation by layer-by-layer electric discharge sintering

TEXTURE FORMATION UNDER ROLLING AND PRIMARY RECRYSTALLIZATION IN Fe86Ga14 ALLOY

The study of technological properties of the titanium alloy Ti-6Al-4V. Part 2

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