Research on submicron-grained structure formation in titanium alloys upon reversible hydrogenation and plastic deformation

The influence of thermohydrogen treatment combined with hot rolling on the structural formation in α- and near-α-titanium alloys has been studied. The prospects of obtaining submicron-grained sheet semifinished products of VT5 (Ti-5.8Al-0.1Fe, wt %) and VT20 (Ti-5.9Al-1.5V-1.2Mo-1.8Zr-0.1Fe, wt %) alloys are shown. In these materials, a submicron-grained structure allows the plastic deformation to be induced by superplasticity at temperatures reduced by 100-200°

Phase composition and microstructure of Ti-6Al-4V alloy after hydrogen-plastic working

The influence of combination of thermohydrogen treatment and plastic working of Ti-6Al-4V (VS6 Ru) titanium alloy on its microstructure and phase composition has been investigatedyesBelgorod State Universit

Nanostructured coatings based on amorphous carbon and gold nanoparticles obtained by the pulsed vacuum-arc method

Nanostructured coatings based on diamond-like carbon and gold-doped carbon with a thickness of 100-300 nm were obtained by a pulsed vacuum-arc method on silicon substrates. The structure of the coatingswas studied by high-resolution transmission electron microscopy, the elemental composition was studied by X-ray microanalysi

Regularities of formation and degradation of the microstructure and properties of new ultrafine-grained low-modulus Ti-Nb-Mo-Zr alloys

Regularities of the formation of ultrafine-grained (UFG) and submicrocrystalline (SMC) structures in new nickel-free low-modulus Ti-Nb-Mo-Zr titanium β alloys under the action of plastic deformation have been studied. Temperature-time ranges of the development of dynamic recrystallization processes under the simultaneous action of temperature and plastic deformation are determined. A type-II recrystallization diagram of the Ti-28Nb-8Mo-12Zr alloy is constructed and analyze

The influence of film criticism on the interpretation of the film by the audience

The article is devoted to the study of the specificity of the influence of the film criticism on the perception, understanding and evaluation of the film by the audience. The authors consider film criticism in the context of the phenomena of media competence, media education and media enlightenment and designate media-enlightenment potential of the film criticis

Study of the structure of crater at the surface of 12Cr18Ni10Ti steel irradiated by high-power pulsed ion beam

The topography of surface layers of 12Cr18Ni10Ti (AISI 321) steel after pulsed high-power Cn+ ion beams irradiation was investigated by scanning electron microscopy. A thin foil was prepared from the cross section of a crater with the use of a focused ion beam in the column of a two-beam electron-ion microscope. The microstructure and chemical composition of the crater were studied by transmission electron microscop

The effect of pulsed nanosecond laser irradiation on the corrosion resistance of Mg-Al-Zn magnesium alloy

The corrosion resistance of Mg-Al-Zn magnesium alloy with coarse-grained and ultrafinegrained structures before and after the treatment of the surface of the alloy with pulsed nanosecond laser irradiation is studie

The local crystallization in nanoscale diamond-like carbon films during annealing

The local crystallization during annealing at 600° C in nanoscale diamond-like carbon coatings films grown by pulsed vacuum-arc deposition method was observed using modern techniques of high-resolution transmission electron microscopy. The crystallites formed by annealing have a face-centred cubic crystal structure and grow in the direction [011] as a normal to the film surface. The number and size of the crystallites depend on the initial values of the intrinsic stresses before annealing, which in turn depend on the conditions of film growth. The sizes of crystallites are 10 nm for films with initial compressive stresses of 3 GPa and 17 nm for films with initial compres- sive stresses of 12 GPa. Areas of local crystallization arising during annealing have a structure dif- ferent from the graphit

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 μm) commercially pure titanium (grade VT1-0) under cyclic tensile loading. The results of investigations by scanning and transmission electron microscopy of the subsurface layer microstructure of the alloy under study after exposure to nanosecond laser irradiation and subsequent fatigue tests are presente

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 and variation of the structural-phase state of carbon coatings formed on the surface of AISI 321 heat-resistant steel by pulsed cathodic arc deposition followed by their irradiation with nanosecond laser pulses are studie