The technological issues of manufacturing modern high-quality model compositions of the VIAM type based on domestic raw materials for the production of parts by casting on smelted models are considered. The results of experimental studies conducted at the National Research Center «Kurchatov Institute» – VIAM, to study the possibility of granulating model compositions made it possible to improve the manufacturability of their production process. The resulting granules, due to their high bulk density, made it possible to simplify both the loading of pressing equipment and packaging for subsequent storage.

Homogenization annealing of wrought aluminum alloys ingots is crucial for further processes such as hot and cold deformation due to the increasing uniformity of structure and technological plasticity. The paper presents the effects of homogenization parameters under various modes on microstructure evolution and technological plasticity of 1163 alloy (Al–Cu–Mg) ingots in the temperature range of 350–470 °C. The microstructure evolution in 1163 alloy was studied by optical microscopy, transmission electron microscopy and energy-dispersive X-ray spectroscopy.

The article presents the results of a study of the mechanical properties and microstructure of forgings made of VT6ch alloy after heat treatment with heating in the β-area , depending on the cooling rate from the temperature of the β- area , the temperature of the second stage of heat treatment, as well as the geometric parameters of the forgings . The values of mechanical properties under tension, impact strength, fracture toughness, microstructure of forgings, as well as low-cycle fatigue and endurance limit in terms of comparing properties are given. A comparative analysis of the obtained test results was carried out.

Climatic stability of hybrid layered metal polymer materials of the «aluminum–organoplastics» class in different climatic and laboratory conditions (warm humid climate, sea climate, salt spray chamber, etc.) is investigated. It is established that properties of materials Alor D16/41 (sheet) and Alor D16/41H (sheet) exposed in warm humid climate does not show reducing the elastic-strength properties of the samples. When exposed to narrow samples with a width of 10 mm with unprotected ends the level of preservation of tensile strength is 82–94 % from the initial value.

In this study, an analysis of the influence of curing temperature conditions on the physical and mechanical properties of two-component spheroplastics VPZ-7M is carried out. Based on previously studied curing modes of resins included in spheroplastics, the most suitable curing modes were selected. A model of the curing reaction of a polymer filler is considered based on experimental data obtained by differential scanning calorimetry. The microstructure of the samples of spheroplastic was studied. The obtained results allow making a choice of the curing conditions to achieve the required material characteristics.

The results of tests for isothermal heat resistance at a temperature of 1150 °C of samples from the ZhS32 alloy with ion-plasma double-layer condensation-diffusion coatings made of nickel alloys VSDP-3, SDP-2, SDP-42 and aluminum alloy VSDP-16 are presented. It is shown that, depending on the initial thickness of the coating, the protection of the ZhS32 alloy is provided at test bases from 100 to 400 hours. The average rate of specific gravity reduction for 9 types of coatings has been determined. The possibility of predicting the service life of coatings using this characteristic is shown.

The properties of coatings EP-140 and VE-69 were studied for the stability after conducting accelerated laboratory climatic tests and fungal resistance tests. Micromycetes isolated in three climatic zones were used: temperate climate, warm temperate climate and dry subtropical climate. It is noted that the adhesive properties of coatings VE-69 and EP-140 do not change after accelerated climatic tests and exposure to micromycetes from three climatic zones. Changes in decorative properties were revealed. Changes in indicators such as gloss and color were noted.

Comparative tests of fiberglass VPS-48/7781 and carbon fiber plastic VKU-39 for aging were carried out in the moderately warm climate of Gelendzhik and the humid tropics of Vanning. A decrease in the strength of fiberglass during bending and shear was discovered. The decrease in mechanical properties measured at 120 °C was greater than at room temperature. The compressive strength of VKU-39 carbon fiber plastic is stable after 3 years of exposure in both climatic zones. For fiberglass VPS-48/7781, the decrease in compressive strength was 11% after 3 years of aging in Gelendzhik and 26% after 3 years in Vanning.