Time filter

Source Type

Moscow, Russia

MISA National University of Science and Technology or MISiS is Russia's primary technological university in the field of steelmaking and metallurgy. It was established in 1918 as a part of the Moscow Mining Academy. In 1930, it became independent. During Stalin's regime, the Institute was renamed the Stalin Moscow Institute of Steel. It adopted its current name in 1962 after uniting with the Institute of Nonferrous Metals and Gold. The status of Technological University was awarded in 1993. MISIS is the leading university of the Higher Metallurgical Education Association, whose members include universities from Russia, Ukraine, and Kazakhstan. It has joint degree programmes with the Freiberg University of Mining and Technology in Freiberg, Germany and the Institut National Polytechnique de Lorraine in Nancy, France. Wikipedia.

Golovin I.S.,Moscow Institute of Steel And Alloys
Physics of Metals and Metallography | Year: 2010

Temperature-dependent internal friction and modulus of elasticity have been studied in samples of pure copper (99.95%) subjected to deformation by equal-channel angular pressing using 1, 4, and 8 passes by the route B C. The influence of deformation and subsequent recrystallization on the parameters of the internal-friction peaks caused by grain-boundary relaxation and recrystallization of severely deformed copper has been determined. Quantitative estimates of the activation parameters of grain-boundary relaxation have been obtained and the limits of its manifestation have been revealed. © 2010 Pleiades Publishing, Ltd. Source

Novikov V.Y.,Moscow Institute of Steel And Alloys
Materials Letters | Year: 2012

Grain growth under the influence of randomly distributed particles is simulated. After some time of the process evolution at a constant particle volume fraction, suppressed grain growth, abnormal growth and normal growth were observed when moving along the particle size axis. If triple junctions formed by grain boundary and particle surface are taken into account, this affects the above order: at relatively large particle volume fraction, an additional range of normal grain growth occurs in the immediate neighborhood to the range of suppressed growth. Similar behavior in a zone-annealed ODS alloy is described in literature. © 2012 Elsevier B.V. All rights reserved. Source

Novikov V.Y.,Moscow Institute of Steel And Alloys
Materials Letters | Year: 2012

Numerical simulations of grain growth are carried out on micro-grained polycrystals containing different volume fractions f of particles of radius r. It was supposed that particles are distributed randomly and do not change their size with time. Particles promote abnormal grain growth; this process is not completed and results in formation of duplex microstructure. Disposition to abnormal growth at first increases and then reduces with an increase in f, the latter being especially noticeable at f > r/D 0 where D 0 is the initial grain diameter. Limiting grain size is found to be equal to ∼0.4 r/f. © 2011 Elsevier B.V. All rights reserved. Source

Glezer A.M.,Moscow Institute of Steel And Alloys
Physics-Uspekhi | Year: 2012

Various studies are conducted to study the creation principles of new-generation multifunctional structural materials. Development of promising amorphous alloys (AA) obtained by rapid quenching from melt (RQM) technique includes formulating the concept of regions of excess free volume, constituting characteristic defects responsible for the processes of plastic deformation and fracture of AAs. Observations have also revealed that a complex combination of defect structures containing low-angle and high-angle grain boundaries whose relative percentages vary, and also defect structures inside the grains of various degrees of perfection. V V Rybin used the concepts of the dominant role of disclination modes when implementing large plastic deformations and related fragmentation processes, and found that the size of the fragments, the basic structural elements, decreases continuously as strain increases and reaches a constant minimum value of 0.2 μm. Source

Belashchenko D.K.,Moscow Institute of Steel And Alloys
Inorganic Materials | Year: 2012

The embedded atom method potentials calculated earlier for liquid lithium, sodium, potassium, rubidium, and cesium and presented in the form of tables are corrected and represented in a unified analytical form. When the parameters of the potential are adjusted using the known temperature dependence of the melt density along the melting line of the metal, the actual energy rises more rapidly than the simulated energy as the critical point is approached. The likely reason for the discrepancy is the thermal contribution of the electron gas to the energy of the metal. The discrepancy between the simulated energy and the actual energy of the metal at high temperatures can be considerably reduced by taking into consideration the thermal excitation energy of the electrons. © 2012 Pleiades Publishing, Ltd. Source

Discover hidden collaborations