Tomsk State University of Architecture and Construction

The paper presents transmission electron microscopy of alloys based on the Cu-Al system, having a gradient structure in order to investigate the spatially continuous transformation of low-stable dislocation structures during large plastic strain to fracture. The identified sequence of strain carriers (dislocation structures) matches that observed before on the stress-strain curve. Two main sequences are observed for the transformation of dislocation structures with increasing distance from the fracture point. With increasing strain degree, the following sequential change in dislocation structures is observed for alloys Cu+0.5 and Cu+5 at.

The Russian mentality and national character are reflected in cultural texts, while the regional linguacultural profile is expressed in local literature. The Tomsk poet Boris N. Klimychev (1930–2013) used a variety of linguistic means to represent the image of Siberia in his verse. This article describes the linguistic representation of all types of sensory perception within the cultural and stylistic dimensions of Siberian poetry. The image of Siberia in Klimychev’s poetry is examined through the lens of his idiostyle and perceptive linguistics. It forms an artistic perceptive macro-image consisting of such micro-images as the city, cold, dampness, silence, darkness, fog, and the taiga. Klimychev’s poetry heavily focuses on vegetative micro-images, including the pine, cedar, birch, bird cherry, and poplar. The semantic chronotope is dominated by acoustic and auditory perception. The texts are rich in perceptual units with sound semantics, which are closely associated with the imagery of a tram, knocking, creaking, and horses. Being at the core of Klimychev’s idiolect, these auditory images provide a direct reference to the history of the Tomsk Province.

High-entropy alloys represent a new class of materials characterized by high configuration entropy and unique properties, such as strength and ductility at various temperatures. This paper considers the TiNbZrHfTa alloy, which was synthesized as thin films using vacuum arc plasma-assisted deposition. The study was performed using X-ray diffraction analysis, the inverse convex hull method, and first-principles calculations within the quasi-harmonic approximation. It has been established that the TiNbZrHfTa alloy is qualified as a stable structure near the melting point. The temperature range of structural stability was found to be T = 1578–2935 K. It is shown that the alloy lattice belongs to the class of single-phase X-ray amorphous structures. A crystallographic database of orthogonal alloy lattices has been created. It has been found that the structural state of the amorphous alloy is determined by a simple cubic lattice, for which crystallographic information is provided.

The paper presents results of an experimental study on the fabrication of ceramics based on MgAl2O4 spinel with the addition of cobalt oxide (Co3O4) at various concentrations of 0.1, 0.25, 0.75, and 1 wt

The kinetics of plasma synthesis of anorthite from a multicomponent charge based on limestone, boehmite, and quartz sand has been studied. Phase transformations in a partially melted sample have been studied by X-ray diffraction (XRD) and thermal analysis. Three structural zones have been identified: a solidified melt, a transition layer of the sintered charge, and the unreacted charge. It has been found that plasma-assisted melting provides high-temperature conditions (>1500°C) required for synthesizing anorthite (CaAl2Si2O8). The solidified melt is mostly amorphous; however, it undergoes crystallization to form anorthite after heat treatment at 950°C. Anorthite and quartz (SiO2) phases have been identified in the transition layer; this finding suggests that reactions occurring during plasma treatment are gradient in nature. The results have shown that the use of plasma technologies is promising for synthesizing high-purity aluminosilicate materials.