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Article
Investigation of the Effect of Nanosecond Laser Pulses Processing on the Microstructure and Fatigue Resistance of Commercially Pure Titanium
The effect has been studied of treatment with nanosecond laser pulses on the fatigue resistance of plate samples of recrystallized (grain size of the order of 2–3 pm) commercially pure titanium (grade VT1-0) u...
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Article
Increased ductility of Ni-based metallic glass ribbon pre-annealed at β-relaxation temperature
The lack of ductility is known to be a major drawback in the mechanical properties of amorphous alloys. A temperature impact is often used, as a factor to improve the mechanical parameters of these thermally u...
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Article
Hot Isostatic Pressing-Induced Structural Changes in MgAl2O4 Ceramics
Magnesium aluminate spinel (MgAl2O4) ceramics have been subjected to hot isostatic pressing. The process led to a 0.28% increase in the density of the ceramics compared to samples prepared by primary hot pressing...
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Article
Effect of the Structural State and Oxide Coating on the Mechanostability of VT1-0 Titanium upon Its Cyclic Loading
The fatigue properties of a submicrocrystalline titanium are shown to be substantially higher than those of a coarse-grained state. A deposition of an oxide coating leads to insignificant increase in these pro...
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Article
Studying the Influence of Nanosecond Pulsed Laser Action on the Structure of Submicrocrystalline Titanium
Microstructure of a thin (1–2 μm thick) subsurface layer of VT1-0 titanium alloy in the initial submicrocrystalline state and upon the action of nanosecond pulsed laser radiation has been studied by methods of...
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Article
A Study of the Influence of Irradiation of Carbon Diamond-Like Coatings with Nanosecond Laser Pulses on Their Structural-Phase Composition and Tribological Properties
Using the methods of Raman spectroscopy, optical metallography and scanning electron microscopy, combined with the measurements of tribological characteristics, special aspects of the formation of microrelief ...
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Article
Investigation of Changes in the Structure of Submicrocrystalline Titanium of VT1-0 Brand under Heat Treatment and Laser Processing with Nanosecond Pulses
The characteristic features of a change in the structure of samples of submicrocrystalline (SMC) technically pure titanium of VT1-0 brand after long-term annealing in a wide temperature range of 150–700°C with...
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Article
Changes in the Defective Structure of the Surface of a Fe77Ni1Si9B13 Metal Glass Ribbon under the Influence of Hydrostatic Pressure and Isothermal Annealing
The features and generality of the effect of hydrostatic pressure and annealing on the surface relief of the contact and non-contact side of the Fe77Ni1Si9B13 metal glass ribbon are revealed. The relationship bet...
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Article
Evolution of Elastic Properties of Ti and Its Alloys due to Severe Plastic Deformation
The paper analyzes how the elastic properties of titanium and its alloys vary as their structure is transformed from coarse- to ultrafine-grained under severe plastic deformation. The anal...
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Article
The Influence of Dynamic Preload on the Fatigue Endurance Limit of AMg6 Alloy
The influence of dynamic preload on the fatigue endurance limit of AMg6 alloy has been experimentally studied in a range of 109 loading cycles. It is established that prestraining up to 10% deformation at 103 s–1
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Article
Evolution of a Defect Structure during Creep Tests of Ultrafine-Grained Metals and Alloys Produced by Severe Plastic Deformation
The structural factors that lead to a decrease in the mechanostability of ultrafine-grained (UFG) metals and alloys during creep tests at increased temperatures have been revealed using small-angle X-ray scatt...
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Article
The Influence of Heat Treatment on the Elastic and Microplastic Properties of Ultrafine-Grained Titanium with Variable Content of Impurities
Results of investigations of the influence of heat treatment at elevated temperatures on the elastic and microplastic properties of ultrafine-grained (UFG) titanium processed by severe plastic deformation are ...
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Article
The Effect of Equal Channel Angular Extrusion and Hydrostatic Pressure on the Elastic and Microplastic Properties of a Cu–0.2 wt % Zr Alloy
The effect of severe plastic deformation and the subsequent impact of high hydrostatic pressure on the elastic and microplastic properties of Cu–0.2 wt % Zr alloy has been studied and analyzed. The influence o...
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Article
The Influence of Mechanical Treatment on the Surface Relief of a Fe77Ni1Si9B13 Metal Glass
The micro- and nanoreliefs of the loaded surfaces of a Fe77Ni1Si9B13 metal glass are probed via scanning tunneling and atomic force microscopies, scanning electron microscopy, and X-ray fluorescence. The fractal ...
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Article
Influence of the Temperature of Straining in a Bridgman Chamber on Peculiarities of the Defect Structure Formation in Commercial-Grade Titanium
Transmission electron microscopy data showed evidence of the formation of structural regions corresponding to deformation (dislocated) fragments and dynamically recrystallized grains in α-phase titanium upon t...
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Article
Internal friction, Young’s modulus, and electrical resistivity of submicrocrystalline titanium
The variation of the internal friction, Young’s modulus, and electrical resistivity of two grades of polycrystalline titanium (VT1-0 and Grade 4) in the area of low temperatures (100–300 K) as depending on the...
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Article
Elastic and microplastic properties of titanium in different structural states
The behavior of elastic (Young’s modulus) and microplastic properties of titanium depending on the initial structure and subsequent severe plastic deformation that transforms the material (concerning the grain...
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Article
Effect of the allotropic transition in titanium on its interatomic interaction energy
The variation of interatomic interaction energy during allotropic transition in titanium is established by analyzing the stress and temperature dependences of durability. This energy is ≈458 kJ/mol in bodycent...
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Article
Defect structure and thermomechanical stability of nano- and microcrystalline titanium obtained by different methods of intense plastic deformation
Mechanical stability under prolonged loading and thermostability under annealing have been studied for nano- and microcrystalline titanium obtained by different methods of intense plastic deformation. The effe...
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Article
Defect structure and mechanical stability of microcrystalline titanium produced by equal channel angular pressing
It is established that increases in nanoporosity and the proportion of high-angle grain boundaries in the process of equal-channel angular pressing are the main structural factors leading to reduction in mecha...