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Article
Welding with Pressure for Making Nuclear Reactor Components
The principles of welding with pressure for making nuclear reactor components from refractory nickel alloys with limited weldability are presented. The main focus is placed on gasostatic diffusive welding with...
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Article
Analysis of the Application of Nickel Superalloys for Advanced Reactor Plants
Abstract—The features and prospects of using nickel superalloys as structural materials for advanced reactor plants, in particular, molten salt reactor (MSR) are considered. The main limiting factors impeding the...
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Article
Design and Analysis of Solid Blanket Concept for Hybrid Fusion-Fission Facility
The article discusses the results of conceptual design and analysis for solid blanket of a hybrid fusion-fission facility based on a tokamak-type fusion reactor with magnetic plasma confinement. This blanket i...
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Article
Microstructure and Properties of Nickel Alloys for Advanced Power Engineering
Results of materials science study, which includes a comparative metallographic analysis and fractography of the structure of deformed nickel alloys, are reported; based on these data, the mechanism of their h...
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Article
Directions for Optimizing the Energy-Technological Steelmaking Conditions in Modern Electric Arc Furnaces
The approaches used to choose directions for optimizing the energy-technological steelmaking conditions in modern electric arc furnaces, which are based on energy balance calculations, are described.
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Article
Mechanism and Kinetics of the Internal Oxidation of Alloyed Steels without External Oxide Layer Formation
The dependences of the kinetic factors and mechanism of oxide formation for internal oxidation zones in the multicomponent alloys are considered. Diffusion equations are presented depending on the internal oxi...
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Article
Hot Isostatic Pressing Temperature Effect on Chromium-Zirconium Copper Alloy Structure and Properties
Hot isostatic pressing, one of the most promising ways of obtaining high-quality joining of metallic materials, is to be used in the manufacture of permanent joints for the structural elements of fusion reacto...
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Article
Thermal Aging of High-Strength Corrosion-Resistant Austenitic Stainless Steel and its Thermal Stability
Unstabilized nitrogen-containing silicon steel 03Kh18N13S2AM2VFBR-Sh (EP 302M-Sh), intended for heat exchanger tubes operating in contact with heavy liquid-metal coolants and water at temperatures of 350 to 55...
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Article
Effect of High Strength Structural Steel Structural State on Fracture Resistance
Fracture resistance of low- and medium-carbon steels depending on type of microstructure (ferritepearlite, bainite, and martensite) and its volume fraction is studied. On the basis of studying the temperature ...
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Article
Optimization of the Energy-Technological Steelmaking Conditions in Modern Medium-Capacity Electric Arc Furnaces
Approaches to the development and implementation of the rational energy-technological conditions of melting in modern medium-capacity EAF, including the electric conditions, the operating conditions of gas–oxy...
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Article
Effect of Structural State on Tendency Towards Stress Corrosion Cracking of Ultralow-Carbon Martensitic and Low-Alloy Pipe Steels
Mechanical properties as well as crack resistance and stress corrosion cracking (SCC) resistance parameters of ultralow-carbon martensite steels (ULMS) type 05H2G2B and HSLA pipe steel 10G2FB with a different ...
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Article
ITER Vessel Internals: Origination and Development
The role and place of NIKIET, as one of the leading design organizations in the nuclear industry, in the joint implementation of the large-scale international thermonuclear reactor project ITER – unparalleled ...
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Article
Development of New Construction Materials for Innovative Reactor Installation Designs
Different stages of the development of new construction materials at NIKIET for innovative designs of reactor installations are analyzed. Justification is given for the use of large-sized intermediate products...
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Article
Stress Cracking of the Metal in 08Kh18N9 Steel Pipelines
The causes and mechanism of metal degradation in damaged regions of heat-exchange pipes (coil) of the sodium–air heat exchanger of the secondary circuit in the IBR-2 research nuclear facility are found due to ...
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Article
General Laws and Influence of Various Factors on the Internal Oxidation Mechanism and Kinetics in Alloyed Steels
The general laws (continuity equation) and the influence of boundary factors on diffusion equations for the internal oxidation zones in multicomponent alloys are presented. The diffusion equations in a continu...
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Article
Mechanism and kinetics of reaction diffusion in steels under the conditions of simultaneous external and internal oxidation
Thermodynamic prerequisites for the formation of internal oxidation zones in multicomponent alloys (metal-solvent + alloying element + insertion element (oxygen, nitrogen, carbon)) are presented. The kinetics ...
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Article
Heat Treatment as a Method for Excluding IGSCC for Dn300 RBMK-1000 Pipeline Welded Joints
Results are given for research performed in order to substantiate an optimum heat treatment regime with the aim of eliminating defect development by an intergranular stress corrosion cracking (IGSCC) mechanism...
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Article
Effect of TiCN-Ti modifiers on the chemical composition of nickel alloys
The effect of nitrogen-containing modifiers on the variations in the chemical composition of nickel alloys during electroslag refining and vacuum induction remelting has been discussed.
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Article
Electroslag remelting of the metal wastes of nickel alloys
The electroslag remelting of the metal wastes of nickel alloys is studied, and the obtained results demonstrate that the chemical composition and the physicomechanical and service properties of the ingots meet...
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Article
Electroslag remelting of the metal wastes of nickel alloys
The electroslag remelting (ESR) of the metal wastes of nickel alloys is studied. It is shown that the chemical composition, physicomechanical properties, and service properties of the formed castings meet the ...
