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Article
Development of Steel for Automated Processing
A low-alloy steel with specific properties is developed for the manufacture of automobile starter shafts by a low-waste automated technology: rotary compression. When using this steel, the production time is s...
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Article
Effect of screw piercing on the structure and mechanical properties of a continuously cast blank made of wheel steel
In this paper, the results of the study on the deformation effect by the screw piercing method on the mechanical properties and macrostructure of a continuously cast blank made of wheel steel are presented. It...
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Article
Research for Optimal Programs for Controlling the Relative Motion of a Spacecraft with Limited Thrust
The problem of optimal control of the relative motion of a spacecraft with a finite thrust engine in arbitrary circumcircular orbits using the Pontryagin’s maximum principle is considered. Motion is studied in...
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Article
Influence of Chemical Composition and Technology of Production on Structural Inhomogeneity of Rails from the E76F Steel
In connection with cases of rejection of R65 rails due to the formation of structural inhomogeneity (shear structures) in the controlled area of the rail head and rail neck, the through technology “blank–finis...
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Article
Delayed Fracture of Martensitic Steels during Hydrogen Saturation as a Function of the Initial Austenitic Grain Size
Effect of the initial austenitic grain size on the local characteristics of delayed fracture of martensitic steels with high and low residual internal microstresses is studied under hydrogen saturation. The co...
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Article
Develo** Models of Turbine Thermal Processes in Low-Steam and Motor Modes
The main purpose of the motor mode is to keep the turbine in hot standby (with the boiler off) without generating electricity to the grid. To do this, the generator is switched to the engine mode, which rotate...
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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 the Segregation of Embrittling Impurities on the Local Strength of Grain Boundaries in a Martensitic Steel
The finite element method and the results of delayed fracture tests of Charpy specimens are used to determine the local strength of grain boundaries in 18Kh2N4VA steel at various contents of phosphorus, antimo...
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Article
Nitriding of High-Alloy Steel During Plasma Arc Remelting
An experimental unit is described for effective alloying of steel with nitrogen by plasma arc remelting. Production regimes are developed for unit operation making it possible to obtain a super-equilibrium con...
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Article
Ways for Improving Efficiency and Reliability of Steam Turbines at Nuclear Power Stations
The current state and ways for improving the effectiveness of steam turbine units at nuclear power stations (NPS) are examined. The specifics of NPS turbines is described. The comparison of NPS steam turbine p...
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Article
Microstructural Factors That Decrease the Local Strength of Grain Boundaries in Martensitic Steels
As a result of the phase transformation of austenite to martensite during steel quenching, weakened structural regions, specifically the boundaries of the original austenite grains, have been formed. They are ...
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Article
Effect of Structural State and Temperature on Crack Generation and Propagation Resistance in Pipe Steels
Comparative research of microstructure and properties of different strength classes of plate steels produced by controlled rolling with accelerated cooling is performed. Standard mechanical properties, ductili...
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Article
Influence of Microalloying on the Strength and Corrosion of Low-Carbon Stainless Steel
Attention focuses on how nitrogen and rare-earth metals modify the mechanical properties and corrosion characteristics of unstabilized low-carbon Fe–Cr–Ni stainless steel, additionally alloyed with silicon and...
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Article
Influence of Nitrogen in Plasma-Arc Remelting on the Structure and Properties of Stainless Steel
Low-temperature plasma is used in the plasma-arc remelting of 55Kh20G9N4 steel. The plasmaforming gases employed are nitrogen and argon. The influence of the remelting parameters on the structure, the mechanic...
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Article
Change in Properties of Pipe Steel with Two-Phase Structure During Low-Temperature Heating and Subsequent Plastic Deformation
Results are given for evaluation of the effect of longitudinal deformation on the change of the mechanical properties and steel properties with a two-phase pipe metal structure previously given low-temperature...
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Article
Composition and properties of steel in cast and forged railroad wheels
The mechanical properties of a cast wheel produced in accordance with the AAR M-107/M-208 standard (United States) are compared with the requirements of State Standard GOST 10791. The strength of wheels produc...
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Article
Effect of N, Mo, and Si on Local Corrosion Resistance of Unstabilized Cr–Ni and Cr–Mn–Ni Austenitic Steels
Features of the effect of both individual and combined alloying with nitrogen, molybdenum and silicon of unstabilized cold-worked and heat-treated austenitic Cr–Ni and Cr–Mn–Ni steels on pitting and intercryst...
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Article
Changes in the fracture strength parameters of ferritic–bainitic and bainitic pipe steels during operation
The fracture strength and the sensitivity to delayed fracture of the pipes in oil-trunk pipelines that are made of ferritic–bainitic and bainitic steels are studied. The results of modeling of the delayed brit...
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Article
Converter smelting of steel with preliminary scrap heating to reduce hot-metal consumption
The consumption of hot metal in slag preparation and slag-coating application in the converter may be reduced by scrap heating. The thermal equivalents of the coke additions and coke consumption in smelting to...
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Article
Effect of Stabilizing Steel Temperature in a Continuous-Caster Tundish by the Plasma Method on the Uniformity of the Mechanical Properties of Plates After Rolling
A method is described for the plasma heating of steel in the tundish of a continuous caster. Results are presented from studies of the mechanical properties of rolled products made of steel that was cast after...
