I.S. Golovin

National University of Science and Technology

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АМ

А. М. Балагуров

Joint Institute for Nuclear Research

V.V. Palacheva

National University of Science and Technology

ИБ

И.А. Бобриков

CIC energiGUNE

J. Cifré

Universitat de les Illes Balears

H.‐R. Sinning

Technische Universität Braunschweig

S.V. Sumnikov

National University of Science and Technology

S. A. Golovin

Research Institute of Instrument named after V.V. Tikhomirova

ВВ

В. В. Чеверикин

National University of Science and Technology

АМ

А. М. Балагуров

Joint Institute for Nuclear Research

A.K. Mohamed

University of Oulu

Cooperative Institutions

National University of Science and Technology

Kurchatov Institute

Russian Academy of Sciences

Lomonosov Moscow State University

Harbin Institute of Technology

Joint Institute for Nuclear Research

Tula State University

Mining Institute

Centre National de la Recherche Scientifique

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Influence of Heat Treatment on Magnetic and Damping Properties of Fe-11 at.% Al Alloys

Diffusion and defect data, solid state data. Part B, Solid state phenomena/Solid state phenomena (2008)

Agnieszka Mielczarek Werner Riehemann Olga Sokolova I.S. Golovin

The influence of heat treatment on the amplitude dependence of internal friction in Fe - 11 at. % Al alloys with carbon contents in the range 0.005 - 0.2 at. % has been studied using an inverted torsion pendulum in the temperature range 300 – 950 K and a vibrating reed apparatus at room temperature. The specimens were annealed at 1273 K in vacuum and cooled down with different cooling rates in order to obtain different degrees of order. It was found that ordering is hardly avoidable in Fe - Al alloys with Al contents > 11 at. %. Ordered alloys are characterised by lower damping capacity due to higher coercivity caused by additional pinning of magnetic domain walls by antiphase boundaries. X-ray diffraction investigations indicate that water-cooling suppresses ordering in Fe - 11 at. % Al alloys while cooling in air or in furnace provokes D03–type ordering. Slowly cooled specimens are characterised by higher damping capacity due to lower coercivity than water cooled or plastically deformed specimens. The amplitude dependent magneto-mechanical damping was determined as the difference between amplitude dependent damping without and with saturating magnetic field (~ 20 kA/m). Magneto-mechanical damping was found to be proportional to the strain where the amplitude dependent damping is maximum and reciprocal to the coercivity and saturation polarisation. Cold rolling increases the coercivity and therefore decreases the magneto-mechanical damping. An increase of the grain size in the investigated samples by heat treatment leads to a qualitatively expected decrease of coercivity and therefore to an increase of magneto-mechanical damping.

Torsion pendulum clock

Damping capacity

Magnetic damping

10.4028/www.scientific.net/ssp.137.129

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Citations (3)

Calculations of plasma build-up in a baseball-seam type device

Plasma Physics (1974)

Yu.N. Dnestrovskii Д. П. Костомаров L F Susdalzeva I.S. Golovin Dmitri Panov

The dynamics of plasma accumulation in a baseball device by means of neutral beam injection is studied by numerical methods. It is shown that by optimizing the choice of injection direction a dense plasma kernel is formed in the central part of the device. This kernel facilitates the transition from plasma build-up by means of Lorentz ionization to that by ionization on the plasma already formed.

Kernel (algebra)

10.1088/0032-1028/16/11/008

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Механизмы линейной неупругости в Fe–Me и Fe–Al–Me (Me = Ga, Ge)-сплавах

Физика металлов и металловедение (2013)

I.S. Golovin

10.7868/s0015323013090052

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Magnetostriction and damping of forced vibrations in Fe-Mo single and polycrystal alloys

Journal of Alloys and Compounds (2022)

I.S. Golovin D.G. Chubov А.Д. Березнер A.A. Shcherbakov D. L. Schlagel

Damping capacity

10.1016/j.jallcom.2022.166786

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Citations (2)

Anelasticity of Fe3Ge-type alloy

I.S. Golovin Alexander Strahl Tatiana S. Pavlova S.B. Golovina S. Jaeger

Source

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Study of Fe<sub>3</sub>Al-Based Alloys by Internal Friction and <sup>59</sup>Fe Radiotracer Diffusion Measurements

Defect and diffusion forum/Diffusion and defect data, solid state data. Part A, Defect and diffusion forum (2005)

Tatiana S. Pavlova S.B. Golovina Sergiy V. Divinski I.S. Golovin

Anelastic effects caused by carbon and vacancy diffusion in Fe3Al based alloys with and without strong carbide forming elements (Ti and Nb) are investigated by internal friction measurements. The decrease of the Snoek peak in Fe–26Al–2Ti and Fe–26Al–0.3Nb alloys with respect to the Fe–26Al alloy is related to a decrease in the amount of interstitially dissolved carbon (C). The so-called X peak, which is observed in the Fe–26Al alloy, also almost disappears after alloying. In order to elucidate the vacancy contribution to the origin of the X peak radiotracer measurements of 59Fe diffusion were performed. The results indicate that the change in the interstitially dissolved C concentration is the main reason of the observed changes in the X peak, although a certain influence of Ti and Nb alloying on the total vacancy concentration may be deduced from the diffusion study.

Carbon fibers

10.4028/www.scientific.net/ddf.237-240.1258

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Order–Disorder Phase Transitions in Fe81Ga19–RE Alloys (RE = Dy, Er, Tb, Yb) According to Neutron Diffraction Data

The Physics of Metals and Metallography (2024)

А. М. Балагуров B. Yerzhanov Б. Мухаметулы N. Yu. Samoylova V.V. Palacheva

10.1134/s0031918x2360286x

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Citations (2)

Texture formation in FeGa alloy at cold hydrostatic extrusion and primary recrystallization

Journal of Alloys and Compounds (2019)

V. A. Milyutin I.V. Gervasyeva Е. Г. Волкова A. Alexandrov В. В. Чеверикин

Recrystallization (geology)

Volume fraction

Dynamic Recrystallization

Hydrostatic equilibrium

10.1016/j.jallcom.2019.153283

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Citations (15)

Bulk vs. Surface Structural Phases in Fe-27ga Alloy

SSRN Electronic Journal (2022)

S.V. Sumnikov И.А. Бобриков I.S. Golovin А. М. Балагуров

The crystal structure of the bulk quenched Fe-27Ga alloy has been studied using high resolution neutron and X-ray diffraction to determine the phase distribution over the volume of the material. Neutron diffraction results have shown that the bulk sample consists of completely ordered D03 phase. X-ray diffraction (XRD) with a long acquisition time has allowed investigating precisely the surface layer with a thickness of ~ 4-16 µm after surface preparation by different methods. The obtained results have confirmed the presence of the ordered D03 phase. Additionally, the required mechanical and/or chemical treatments of the sample for the XRD experiments led to the formation of extra phases with less ordered structures, B2 and A2, in the surface layer. It has been found that the ratio and volume fraction of the additional phases depend on contact duration of the alloy with the air atmosphere. Existence of significant amounts of m-D03 phase, which is considered by several authors to be responsible for the giant magnetostriction of Fe-Ga alloy, is excluded by both neutron and XRD data.

10.2139/ssrn.4154301

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Citations (1)

Strain-induced interaction of hydrogen atoms with dissolved atoms in IVA group metals

Journal of Alloys and Compounds (2002)

M. S. Blanter I.S. Golovin E. Granovskiy H.‐R. Sinning

Lattice constant

Lattice (music)

Interaction energy

10.1016/s0925-8388(02)00322-5

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Citations (12)