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Zhukov A.S.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey | Manninen S.A.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey | Vasil'eva O.V.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey | Kuznetsov P.A.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey
Measurement Techniques | Year: 2015

The results of calculations of the efficiency of the shielding of a photoelectronic spectrometer by amorphous alloys, designed to protect the instrument from the Earth’s magnetic field, are presented. The distribution of the magnetic induction inside the shield for different positions of the instrument is measured. The anisotropy of the shielding properties of a magnetopolymer shield is investigated. © 2015, Springer Science+Business Media New York.


Korotovskaya S.V.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey | Orlov V.V.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey | Khlusova E.I.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey
Metallurgist | Year: 2014

The possibility is established of ultrafine grained structure formation in low-alloy steels as a result of occurrence of fragmentation in austenite during deformation below the recrystallization temperature. The fractional nature of austenite deformation at temperatures for retarded recrystallization has a favorable effect on the refinement of the ferritic-bainitic steel structure. For steel with a bainitic structure, the deformation frequency does not have a marked effect. © 2014, Springer Science+Business Media New York.


Milyuts V.G.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey | Tsukanov V.V.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey | Vladimirov N.F.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey
Metallurgist | Year: 2013

The effect of top and bottom pouring of large forging ingots on the quality of high-strength shipbuilding steel plate 150 mm thick is studied. It is shown that technology developed for forging billet top pouring in argon at atmospheric pressure and bottom pouring under a slag-forming mix with protection of the metal stream by argon provides a high level of quality for ultrathick shipbuilding steel plate. © 2013 Springer Science+Business Media New York.


Zisman A.A.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey | Petrov S.N.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey | Ptashnik A.V.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey
Metallurgist | Year: 2015

A method is considered for panoramic crystallographic analysis of bainite and martensite structures based on images of crystal lattice curvature and making it possible to identify α-phase varieties, and also to determine their volume fraction. The method is proven successfully for high-temperature alloy steels, for which by means of dilatometry and expert evaluation of metallographic images a characteristic scale is plotted for lattice curvature, whose ranges correspond to bainite and martensite structural types. © 2015, Springer Science+Business Media New York.


Soshina T.V.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey | Zisman A.A.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey | Khlusova E.I.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey
Metallurgist | Year: 2013

Conditions for effective revelation of boundaries between former austenite grains are determined for lowcarbon steel with ferrite, bainite, and martensite structures by thermal etching in a vacuum. Possible errors for the method are analyzed in certifying steels, connected with grain refinement in the course of repeated heating or with growth during high-temperature soaking. It is shown that after vacuum etching use of a scanning electron microscope makes it possible simultaneously with a transformed structure to depict the original γ-phase structure, and in the case of its deformation to reveal traces of slip in former austenite grains. © 2013 Springer Science+Business Media New York.


Kruglova A.A.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey | Orlov V.V.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey | Sharapova D.M.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey
Metallurgist | Year: 2015

Simulation modeling is used in order to study metal structure in a heat-affected zone (HAZ) during submerged-arc welding. A correlation is established between low values of impact energy observed and features of HAZ structure formation during submerged-arc welding of low-alloy steel of strength category K70. It is shown that the appearance of brittle precipitates with an increase in content of the main alloying elements at large grain boundaries is a reason for low impact energy in the area of large HAZ grains during steel K70 welding. Development of these areas is connected with repeated heating (simulating a second pass during rolling) in a temperature range somewhat lower than the Ac1 point. A reduction in cooling rate in the first heating cycle (which corresponds to an increase in linear energy during welding) facilitates precipitate enlargement over grain boundaries. Multipass welding and a reduction in pass linear energy are recommended in order to exclude the formation of these areas and to improve and stabilize impact energy in a welded joint HAZ. © 2015 Springer Science+Business Media New York


Pichuzhkin S.A.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey | Chernobaev S.P.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey | Vainerman A.A.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey
Chemical and Petroleum Engineering | Year: 2016

As a result of experimental research, regimes are determined for mechanized argon-arc welding of copper alloys MNZh5-5, L90, and BrAMts9-2 with steels AB2 and 20, providing preparation of high quality joints during manufacture of chemical and petrochemical engineering objects. © 2016 Springer Science+Business Media New York


Vikhareva T.V.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey | Fomina O.V.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey | Kalinin G.Y.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey | Gribanova V.B.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey
Metallurgist | Year: 2016

Recrystallization of austenitic nitrogen-containing steel is studied during hot deformation in the range 800–1000°C. It is established that weakening occurs first immediately during hot plastic deformation, and second during post-deformation pauses between passes. In the first case weakening is accomplished as a result of dynamic recrystallization, and second as a result of static recrystallization. Conditions are determined for the start of dynamic recrystallization and the static recrystallization temperature is established, and also its time characteristics: incubation period τ0 and completion time τc. © 2016 Springer Science+Business Media New York


Korotovskaya S.V.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey | Orlov V.V.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey | Khlusova E.I.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey
Metallurgist | Year: 2014

Principles are established for controlling low-alloy steel structure formation during thermomechanical treatment for the possibility of creating steels for different purposes from slabs of a single chemical composition. Technology is developed for manufacturing high-strength shipbuilding steels with a yield strength of 460 MPa and strength category K65 pipe steels of unified chemical composition. © 2014, Springer Science+Business Media New York.


Pichuzhkin S.A.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey | Chernobaev S.P.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey | Vainerman A.A.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey | Veretennikov M.M.,Prometey Central Research Institute of Structural Materials TsNII KM Prometey
Metallurgist | Year: 2016

This articles examines the formation of high-quality joints between aluminum bronzes and copper-nickel alloys that contain different amounts of nickel. The joints are formed by explosion welding or hard-facing as part of the fabrication of products for chemicals production, gas engineering, shipbuilding, and other sectors of industry (reinforcement bars, heat exchangers, pipelines, etc.). A study is made of the effect of the nickel content of copper-nickel welding wires on crack formation in hard-faced metal, its structure, and its mechanical properties when aluminum-nickel bronze of grade Br.A9Zh4N4Mts1 is joined with copper-nickel alloys by argon-arc welding and hard facing. It is shown that the use of welding wires made of copper-nickel alloys with a nickel content of up to 18% guarantees the formation of high-quality crack-free joints with mechanical properties that are comparable to the properties of the lower-strength material which is used. © 2016 Springer Science+Business Media New York

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