When exposed to high temperature, the structure of metals and their alloys changes. The study of the effect of high temperatures on changes in the structure of the structure of a solid has a number of disadvantages (changes in the properties and structure of materials). The study of the structure of metals at the nanoscale using real experiments is difficult because of the particle sizes. The use of computer modeling methods to study and study the effects of high temperatures on the atomic mechanisms of BCC crystal changes allows us to investigate problems that are difficult to solve experimentally. Conducting research by computer modeling is the most rational. Atomistic modeling of structure ablations occurring during irradiation of materials by femto- and picosecond laser pulses has been carried out. The method of molecular dynamics was chosen as the research method. Using a computer model, the influence of the laser ablation process on the change in the internal structure of materials was studied using computer modeling (molecular dynamics method). A model of molecular dynamics is constructed, which allows to study the process of ablation. The proportion of ejected particles as a result of heating is estimated. It is determined that during the heating and cooling of the system, the distribution of such particles is close to normal.

At present, the improvement of the physical parameters and special properties of the surfaces of materials is becoming increasingly important due to the multifaceted research problems associated with the introduction of high technologies into production processes. Since most structures and mechanisms operate under mechanical loads that lead to destruction, to analyze their service life, it is necessary to study the behavior of metals under external energy influences. In the work, the influence of weak magnetic fields up to 0.5 T on the deformation characteristics of aluminum for the possibility of plasticizing the material was studied. It has been established that exposure to constant magnetic fields leads to a reversible decrease in the microhardness of aluminum. The threshold value of the induction of a constant magnetic field (В = 0.1 T) was determined, above which it is possible to observe the effect of the influence of a constant magnetic field on the microhardness of aluminum. A further increase in the magnetic field leads to a linear increase in the effect. In the study of the creep rate of commercially pure aluminum, the dependence of the creep rate of aluminum, at the steady and accelerated stages, on the magnitude of the magnetic field induction was revealed. It has been investigated that the application of a magnetic field significantly changes the creep rate of aluminum. The effect of the induction of the magnetic field leads to a significant decrease in the creep rate compared to the sample that was destroyed without the action of the magnetic field. At the steady and logarithmic stages, the creep rate decreases regardless of the magnetic field induction. It was also found that the effect of the influence of the magnetic field is not unambiguous: there is both an increase in the creep rate, reaching a maximum value at B = 0.1 T, and its slowing down, reaching a minimum at B = 0.5 T. Thus, the dependence of the relative change in the creep rate of aluminum on the value of the magnetic field induction was revealed.

Using the methods of light and scanning electron microscopy, X-ray spectral microanalysis, determination of microhardness, the microstructure features of electric arc coatings deposited with flux-cored wire are revealed (wire composition 0.40 % C, 0.78 % Si, 1.04 % Mn, 1.61% Cr, 0.49% Ni, 0.51 % Mo, 0.65 % V, 0.001 % Co, 0.001 % W, 0.07 % Cu, 0.059 % S, 0.02 % P). It is shown that the structure of coatings metal base has a columnar structure of a coarse-needle martensite. In the structure of the layers, nonmetallic inclusions of a globular type of two dimensional groups with average sizes of 12 and 27 μm formed by aluminum, manganese and silicon oxides were revealed. Numerous small inclusions of sulfides of irregular globular shape with a diameter of 3 – 4 μm were observed on the sections. The thickness of the coatings is 3 mm, the depth of the thermal influence zone formed by mixing the surfacing material with the substrate material is 5 mm. The microhardness distribution reflects the two-layer structure of the modified surface, in the deposited layer the microhardness reaches 500 HV (50 HRC), in the zone of thermal influence – 300 HV (35 HRC).

The paper describes the purpose of coilers used in metallurgical rolling mills. The coiler designs of various types are considered: with a movable and fixed storage of the finished product – bull rods. It is shown that the development of the coiler designs of the considered types occurs in parallel, while it is preferable to install coilers with a movable storage, and in continuous wire mills having higher rolling velocities – coilers with a fixed storage.

The paper analyses the theoretical foundations of micro- and nanoscale hydrodynamic instabilities formation. In traditional and modern technologies, there are processes developing at micro and nano distances that previously could not be paid attention to. Identification of new patterns and determination of the range of parameters under which they are implemented determines the scientific significance and fundamental nature of research. Specific physical situations where Kelvin-Helmholtz instabilities are realized or can manifest themselves are considered. The practical significance of the tasks is to create fundamentally new technologies based on the gained knowledge. The solved tasks are described.

The technology of restoration and protection of gears, worn gears by welding is described. Provides information about the welding materials used in the restoration of gears. Examples of restored teeth and gears are shown.

The technology of restoration and protection of gears, worn gears by welding is described. Provides information about the welding materials used in the restoration of gears. Examples of restored teeth and gears are shown.

The technology of restoration and protection of gears, worn gears by welding is described. Provides information about the welding materials used in the restoration of gears. Examples of restored teeth and gears are shown.

For CoCrFeMnNi high-entropy alloy (HEA) of non-equiatomic composition, obtained by means of wire-arc additive manufacturing (WAAM), tensile strain curves of the samples after manufacturing and after electron beam processing (EBP) have been recorded and analyzed. Dependences of tensile strength and elongation, microhardness on electron beam energy density have been established. It has been found that decrease in ultimate strength and relative elongation increases with an increase in electron beam energy density. The dimple rapture and presence of micropores and microstratifications are revealed. Regions with a stripe (plate) structure are shown, the area of which increases with an increase in electron beam density from 25% at 10 J/cm² to 65% at 30 J/cm². With an increase in electron beam energy density, thickness of molten layer changes within (0.8 – 5.0) μm, and the average size of crystallization cells increases from 310 nm at 15 J/cm² to 800 nm at 30 J/cm². Nonmonotonic change in scalar density of dislocations has been established, reaching the maximum value (of ~5.5∙1010 cm^-2) at a distance of 25 µm from the irradiation surface. It is shown that non-misoriented cellular dislocation substructure with cell sizes from 400 nm to 600 nm is formed in the surface layer. Moving away from the surface, dislocation substructure changes from cellular to cellular-reticular and, at distance of 120 – 130 μm, to the original alloy substructure with chaotic distribution of dislocations. It has been suggested that the defects formed in the surface layers during EBT may be one of the reasons for decreasing extreme values of strength and ductility of HEA.

The article substantiates promising directions of development of underground geotechnology in the conditions of Kuzbass. The basis for new directions is digitalization of objects and processes of the coal mine, development and implementation of technological solutions using multivariate methods of modeling and optimization of technology parameters and technical means, adapted to the conditions of the coal mines of Kuzbass and providing industrial safety in the period up to 2035.

The article substantiates promising directions of development of underground geotechnology in the conditions of Kuzbass. The basis for new directions is digitalization of objects and processes of the coal mine, development and implementation of technological solutions using multivariate methods of modeling and optimization of technology parameters and technical means, adapted to the conditions of the coal mines of Kuzbass and providing industrial safety in the period up to 2035.

Analysis of factors affecting the architecture of a residential building, which, ultimately, affects the architecture of a populated place.

Analysis of factors affecting the architecture of a residential building, which, ultimately, affects the architecture of a populated place.

Analysis of factors affecting the architecture of a residential building, which, ultimately, affects the architecture of a populated place.

Analysis of factors affecting the architecture of a residential building, which, ultimately, affects the architecture of a populated place.

Analysis of factors affecting the architecture of a residential building, which, ultimately, affects the architecture of a populated place.

Analysis of factors affecting the architecture of a residential building, which, ultimately, affects the architecture of a populated place.

A study was conducted aimed at determining the indicators and characteristics of the warming process in terms understandable to a wide range of people, using evidence from sources well known in the world. This work will allow at least an approximate assessment of quantitative indicators of phenomena of significant scientific and social interest for a wide range of readers.

A study was conducted aimed at determining the indicators and characteristics of the warming process in terms understandable to a wide range of people, using evidence from sources well known in the world. This work will allow at least an approximate assessment of quantitative indicators of phenomena of significant scientific and social interest for a wide range of readers.

A study was conducted aimed at determining the indicators and characteristics of the warming process in terms understandable to a wide range of people, using evidence from sources well known in the world. This work will allow at least an approximate assessment of quantitative indicators of phenomena of significant scientific and social interest for a wide range of readers.