This paper presents a review of number works devoted to the studies high-entropy alloys (HEAs). As is known, HEAs represent new class materials that have attracted attention scientists due their unique properties and prospects application in hydrogen power engineering. The peculiarity high entropy mixing, which provides phase stability flexibility developing with given characteristics. main focus this on for solid-state storage, physicochemical mechanical properties, synthesis technologies....

This paper presents the results of a metallographic and tribological study 86WC-10Co-4Cr coatings obtained by HVOF method on Termika-3 unit at varying spraying distances. The influence distance coating microstructure, phase composition, as well mechanical properties, was studied. According to study, it found that optimum for with improved wear resistance hardness characteristics low porosity is 300 mm.

Purpose This research aimed to identify the optimal plasma cutting parameters for enhancing quality and efficiency of steel alloy processing. Systematic experiments, supported by microstructure analyses Taguchi method, were conducted determine ideal settings minimizing defects resource consumption while ensuring high-quality cuts. Design/methodology/approach The study employed a systematic approach Experiments using Kawasaki RS-010L robotic manipulator, powered DS 120P.33 inverter power...

The paper considers the research results of structural-phase state and tribological characteristics detonation coatings based on Ti–Si–C, obtained at different filling volumes explosive gas mixture barrel a gun. analysis indicates that phase composition properties strongly depend technological parameters spraying. With an increase in volume up to 70% consist mainly TiC phase, because high temperature leads strong decomposition Ti3SiC2 powders. Thus, XRD confirm mixture’s volume, partial...

Al2O3 coatings were applied on the surface of 12Ch18N10T steel by detonation method at different degrees filling gun. The aim was to study influence technological parameters formation coating’s structure, phase composition and tribological characteristics. degree gun with a gas mixture (C2H2/O2) varied from 53% 68%. X-ray diffraction showed that content α-Al2O3 increases depending filling. results hardness an increase in phase. When is filled gas, Al2O3-based coating has 20.56 GPa compared...

This review paper presents a detailed analysis of the influence high-velocity oxygen–fuel (HVOF) spraying parameters on microstructure formation and performance characteristics Cr3C2-NiCr coatings. Key HVOF parameters, including spray distance, oxygen-to-fuel ratio, powder feed rate, temperature, are examined in relation to their impact coating properties. Structural such as density, porosity, adhesive strength, microhardness, which determine mechanical behavior coating, analyzed. Special...

Abstract. The purpose of this study is to determine the possibilities digital technolo-gies and case method in development creativity future teachers physics teaching through medium a foreign language. Akhmet Yassawi International Kazakh-Turkish University has created computer models various physical processes phenomena on basis Optics English training course developed their application. Since opens way formation creativity, we have evaluated effectiveness methodology developed, evaluation...

The article deals with the effect of irradiation Si+ ions on phase transformations in Ti–Al system during thermal annealing. An aluminum film a thickness 500 nm was deposited VT1-00 titanium samples by magnetron sputtering, followed ion implantation. Samples before and after Si were annealed vacuum 10−4 Pa temperature range 600–1000 °C. It established that implantation reduces dissolution Al α-Ti formation silicides (TiSi2, Ti5Si3) stabilizes aluminide phases Ti3Al rich aluminum. As result,...

Abstract This work shows the results of research fine and dislocation structure transition layer 18CrNi3Mo low-carbon steel after influence electrolytic plasma. Conducted has shown that modified layer, as a result carbonitriding, was multiphase. Quantitative estimates were made for carbonitride М 23 (С,N) 6 in various morphological components α -martensite on average by material nitro-cemented steel. It established -phase is tempered martensite nitrocementation. Released represented batch,...

The results of a study the microstructure evolution pre-mechanically activated elementary powders based on Ti-25Al-25Nb (at.%) compositions differing in particle size aluminum (Al) component are presented. It was found that during mechanical activation, most Al dissolved Ti and Nb lattices by interpenetration with formation solid solutions (Ti, Al) (Nb, Al). has been established an increase temperature to 1400 °C, when sintering powder materials Ti-Al-Nb system, leads sharp particles, as...

Composite coatings based on chromium carbide (Cr3C2) and nickel–chromium alloys (NiCr) are widely used due to their unique properties, including high heat resistance, wear resistance corrosion resistance. This article studies the structural–phase physical–mechanical characteristics of Cr3C2-NiCr composite applied by high-velocity oxygen fuel E110 zirconium alloy. The HVOF method was chosen create with adhesion substrate excellent performance properties. Analysis microstructure cross-section...

<abstract> <p>This article presents the results of a study on effect electrolyte-plasma cementation phase composition surface-modified layer and mechanical properties 20X steel using different solutions. It has been determined that followed by quenching in solutions containing (a) 10% calcined soda (Na<sub>2</sub>CO<sub>3</sub>), urea (CH<sub>4</sub>N<sub>2</sub>O), glycerin...

In the present work results of electrolytic-plasma treatment influence on mechanical properties and structural-phase condition steel’s 12Cr18Ni10Ti surface layers. work, characteristics layers are investigated, cemented in electrolytic plasma with composition 10 % Nа2CO3 С3Н8О3. The operational parameters for processing determined. optimal content components saturating mixtures by cementation is defined. According to study it found that, after electrolyte processing, high wear resistance...

In the present work results of electrolytic-plasma treatment influence on mechanical properties and structural-phase condition steel’s 12Cr18Ni10Ti surface layers. work, characteristics layers are investigated, cemented in electrolytic plasma with composition 10 % Nа2CO3 С3Н8О3. The operational parameters for processing determined. optimal content components saturating mixtures by cementation defined. According to study it is found that, after electrolyte processing, high hardness increased...

<abstract> <p>In this work, the stability of microstructure experimentally obtained two-phase (O + B2) alloy Ti–25Al–25Nb (at.%) system were studied during thermal cycling in a hydrogen atmosphere. It was found that structure Ti–Al–Nb shows high thermodynamic stability. In case, phase transformations secondary phases (α2, AlNb<sub>2</sub>) are observed alloy, volumetric content which at all stages testing does not exceed 2%. Thus, after first cycle high-temperature...

In this work, effect of spark plasma sintering (SPS) temperature on structure and phase composition (SPC) Ti-Al-Nb-based alloys produced by SPS technique at 1000 to 1550 °C has been investigated. X-ray analysis, raster electron microscopy energy dispersive spectroscopy with determination element distribution were applied study sintered alloys. It was found that microstructure 1200 is heterogeneous. These consist Ti3Al grains Nb2Al as well dispersed separations Ti2AlNb unreacted particles...

The structure of low-carbon steels after saturation by nitrogen and carbon in the mode electrolytic-plasma nitriding carbonitriding on surface austenitic stainless steel 12Cr18Ni10Ti has been studied. Optimum modes are determined ensuring maximum carbon, microhardness surface. It is established, that electrolyte-plasma processing microstructure martensite structure. As a result research it revealed high hardness.

The article examines the changes of structural-phase states and microhardness R6M5 steel surface layer after electrolytic-plasma nitriding. It is found that nitriding surface, diffusion formed, which a nitrogen martensite. phase composition varies depending on temperature. An increase microhardness, state, out. main factor, in fluencing high-speed with nitriding, formation nitro . gen martensite monophasic nitride Fe 4 N ( γ-phase), as well fine inclusions, hardening phases layers.

The paper considers the study results of phase composition and microhardness detonation coatings based on Ti-Si-C after exposure to pulsed plasma treatment. CCDS2000 complex was used obtain coatings. Coatings surface modification carried out using (PPE). were treated with varying distance H (30 mm mode 1, 40 2, 50 3) from plasmatron hardened surface. It is shown that are generally characterized by high compared original coating. determined treatment effects an increase in intensity all...

The paper addresses findings regarding the influence of electrolytic plasma treatment on mechanical properties as well structural and phase states × 12 CrNi 18 10 Ti steel. Electrolytic is based carburizing stainless steel heated in electrolytes. Treatment samples has been performed follows: were up to a temperature between 850 950 °C then they cured for 7 minutes an electrolyte aqueous solution containing % glycerol (C3H8O3) 15 sodium carbonate (Na2CO3). It found that, after treatment,...

Abstract The present study is devoted to research into the morphology and structural-phase state of an R6M5 high speed steel surface layer after it was affected by a plasma beam. It discovered, that multi-phase material with α-phase, γ-phase (retained austenite) carbide phase just as in initial state. main component matrix before beam processing α-phase (γ → α’-martensite): lamellar lath martensite; but martensite dominated volume ratio ~90 % gross share α’-martensite. second morphological...

The structure of low-carbon steels after saturation by nitrogen and carbon in the mode electrolytic-plasma nitriding carbonitriding on surface austenitic stainless steel 12Cr18Ni10Ti has been studied. Optimum modes are determined ensuring maximum carbon, microhardness surface. It is established, that electrolyte-plasma processing microstructure martensite structure. As a result research it revealed high hardness.