Physics of Metals and Metallography

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Emission Mössbauer spectroscopy of grain boundaries in polycrystalline molybdenum
Physics of Metals and Metallography - Tập 116 - Trang 378-384 - 2015
V. V. Popov, A. V. Sergeev
Grain boundaries in polycrystalline molybdenum have been studied by emission Mössbauer spectroscopy on 57Co (57Fe) nuclei. It has been shown that Co atoms diffuse along the grain boundaries by the interstitial mechanism. The states of Co atoms in grain boundaries and in near-boundary regions of the crystallites have been analyzed. The values of the effective diffusion coefficient in the subboundar...... hiện toàn bộ
Metallodielectric nanocomposites with enhanced transparency
Physics of Metals and Metallography - Tập 112 - Trang 1-12 - 2011
A. S. Shalin
Optical properties of spatially ordered nanocomposites consisting of spherical dielectric and metallic nanoparticles have been investigated. On the basis of the method of integral equations, expressions for the field inside and outside the system have been derived and studied. It has been shown that, depending on the material and geometrical parameters of the nanoaggregate, two different states of...... hiện toàn bộ
Transformation of austenite in Fe-Cu alloys. III: Copper precipitation during cooling and holding of steels alloyed with copper
Physics of Metals and Metallography - - 2008
В. Н. Урцев, Д. А. Мирзаев, I. L. Yakovleva, Н. И. Виноградова
Effect of chemical interaction on the stability of metal clusters in FCC metals
Physics of Metals and Metallography - Tập 106 - Trang 260-265 - 2008
I. N. Kar’kin, L. E. Kar’kina, Yu. N. Gornostyrev
Structural stability of small Ni, Al, and Au metal clusters with a number of atoms close to N = 55 and 147 has been studied by the method of molecular dynamics with the use of realistic potentials of interatomic interaction. It has been shown that in Ni, in which the icosahedral configuration is most stable, the mass spectrum predominantly contains peaks, which correspond to N = 55 and 147. At the...... hiện toàn bộ
Kinetics and crystal geometry of precipitation of vanadium carbides at the interphase boundary upon pearlitic transformation of steel
Physics of Metals and Metallography - - 2013
В. И. Изотов, Н. А. Комков, Г. А. Филиппов
Induced magnetic anisotropy and the structure of nanocrystalline Fe-Co-Cu-Nb-Si-B alloys with different content of Co: II structure of alloys with an induced magnetic anisotropy
Physics of Metals and Metallography - Tập 107 - Trang 449-456 - 2009
N. M. Kleinerman, V. V. Serikov, V. A. Lukshina, E. G. Volkova, N. V. Dmitrieva, A. P. Potapov
A connection has been established between the structural state (phase composition) of the nanocrystalline alloys Fe73.5 − x Co x Cu1Nb3Si13.5B9 (x = 0, 10, 20, 30) and the type of the induced magnetic anisotropy (IMA), which is formed in the process of thermomechanical treatment (TMechT), on the one hand, and its thermal stability, on the o...... hiện toàn bộ
Study of microstructure of surface layers of low-carbon steel after turning and ultrasonic finishing
Physics of Metals and Metallography - Tập 114 - Trang 41-53 - 2013
Zh. G. Kovalevskaya, Yu. F. Ivanov, O. B. Perevalova, V. A. Klimenov, P. V. Uvarkin
Profilometry and optical and transmission electron microscopy are used to examine the microstructure of surface layers of a low-carbon ferrite-pearlite steel subjected to turning and ultrasonic finishing. It is shown that turning peaks and valleys have different microstructures, which stipulates manifestation of technological hereditary when processing surfaces of machined parts. Ultrasonic finish...... hiện toàn bộ
Strength and substructure of Al–4.7Mg–0.32Mn–0.21Sc–0.09Zr alloy sheets
Physics of Metals and Metallography - Tập 118 - Trang 407-414 - 2017
V. S. Zolotorevskiy, R. I. Dobrozhinskaya, V. V. Cheverikin, E. A. Khamnagdaeva, A. V. Pozdniakov, V. S. Levchenko, E. S. Besogonova
Laws of the formation of substructure and of changes in the hardness and in the mechanical properties have been established for sheets of 1545K alloy obtained by tension according to different technologies at various accumulated strains. With an increase in cold deformation (e cold) from 0 to 2.64, the yield stress of cold-worked sheets increases from 355 to 466 МPа...... hiện toàn bộ
Main features and the driving force for the formation of the quasicrystalline phase in Al-Cu-Fe powders after mechanoactivation
Physics of Metals and Metallography - Tập 105 - Trang 610-621 - 2008
V. V. Cherdyntsev, S. D. Kaloshkin, I. A. Tomilin, G. Principi
The evolution of the phase and structural states during heating of a powder mixture of composition Al65Cu23Fe12 subjected to mechanoactivation has been investigated. The solid-state transformations have been studied using Mössbauer spectroscopy, X-ray diffraction, and differential scanning calorimetry. The sequence of phase formation during heating was compared with the data on the heat of formati...... hiện toàn bộ
Structure and properties of titanium-free maraging alloys
Physics of Metals and Metallography - Tập 101 - Trang 66-74 - 2006
V. V. Rusanenko, A. F. Edneral, M. A. Libman
The changes in the structure, phase composition, and physicomechanical properties of titanium-free maraging alloys based on the Fe-15–23% Ni-(Co, Mo, V) system after heating to the single-phase α field and two-phase α + γ field have been studied. It has been established that the strengthening of N15K10M5F5-type maraging alloys is caused by the precipitation of fine particles (20–50 nm) of intermet...... hiện toàn bộ
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