M. F. Imayev
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View article: Influence of the depth of scroll grooves of the shoulder and welding pressure on temperature distribution and material mixing during FSW of AA6063 aluminum alloy sheets
Influence of the depth of scroll grooves of the shoulder and welding pressure on temperature distribution and material mixing during FSW of AA6063 aluminum alloy sheets Open
The aim of the work was to investigate the effect of the scroll groove depth and welding pressure on the temperature distribution and material mixing in pinless friction stir butt welding of AA6063 aluminum alloy sheets using the method of…
View article: Effect of High-Pressure Torsion on Phase Formation and Mechanical Properties of a High-Entropy TiZrHfMoCrCo Alloy
Effect of High-Pressure Torsion on Phase Formation and Mechanical Properties of a High-Entropy TiZrHfMoCrCo Alloy Open
This investigation delved into the alterations in the mechanical properties of a TiZrHfMoCrCo high-entropy alloy due to phase transformations induced by high-pressure torsion (HPT). The alloy’s genesis involved levitation melting within an…
View article: Microhardness of eutectic Al-Si alloy after friction stir processing and annealing
Microhardness of eutectic Al-Si alloy after friction stir processing and annealing Open
The plate of eutectic Al-Si alloy (AK12D) with a thickness of about 5 mm was subjected to friction stir processing (FSP). Samples for the study were cut perpendicular to the welding direction. Next, the samples were annealed for 1 h in the…
View article: Evaluation of the thermodynamic possibility of in-situ composites fabrication in aluminum-metal and aluminum-metal oxide systems through friction stir processing
Evaluation of the thermodynamic possibility of in-situ composites fabrication in aluminum-metal and aluminum-metal oxide systems through friction stir processing Open
Thermodynamic evaluations of the possibility of the interaction reaction of aluminum with powders of Ti, Ni, Fe, TiO2, NiO and Fe2O3 leading to the formation of intermetallics and aluminum oxide Al2O3 during friction stir processing (FSP) …
View article: Effect of the length of the tool pin on the hardening of 2024 aluminum alloy under friction stir processing
Effect of the length of the tool pin on the hardening of 2024 aluminum alloy under friction stir processing Open
The paper reports the results of studies on the effect of the tool pin length on the microstructure and hardness of 2024 aluminum alloy sheets with a thickness of 3.0 mm during friction stir processing (FSP), as well as computer simulation…
View article: Computer simulation of friction stir processing of plate from 2024 aluminum alloy
Computer simulation of friction stir processing of plate from 2024 aluminum alloy Open
In the present work, three-dimensional finite element modeling of the friction stir processing of a 3-mm-thick 2024 aluminum alloy plates using DEFORM-3D software product has been carried out. The optimal pin length was determined based on…
View article: Effect of friction stir processing on the strengthening of the 2024 aluminum alloy
Effect of friction stir processing on the strengthening of the 2024 aluminum alloy Open
A study of the influence of the tool pin length on the strengthening of the 2024 aluminum alloy under friction stir processing (FSP) was carried out. According to the results of real and model experiments, it was found that for a workpiece…
View article: Influence of the pin shape of the tool during friction stir welding on the process output parameters
Influence of the pin shape of the tool during friction stir welding on the process output parameters Open
In this paper, computer simulation of the friction stir welding (FSW) of AlMg6Mn0.6 aluminum alloy sheet blanks by means of the DEFORM-3D software package is carried out to select the optimum pin geometry based on the calculation of the di…
View article: The effect of hot deformation by torsion under pressure and post-deformation annealing on superconducting properties of Bi(Pb)2223 ceramics
The effect of hot deformation by torsion under pressure and post-deformation annealing on superconducting properties of Bi(Pb)2223 ceramics Open
The influence of conditions of hot deformation by torsion under pressure and subsequent annealing on the parameters of superconducting transition and critical current density Jc(77 K, 100 Oe) of (Bi,Pb)2Sr2Ca2Cu3O10 + d {Bi(Pb)2223} cerami…
View article: The effect of holding temperature on the strength of the diffusion bond of Ti-alloy and stainless steel through the ultrafine-grained interlayers of Ni and Ni-2%Cr alloy
The effect of holding temperature on the strength of the diffusion bond of Ti-alloy and stainless steel through the ultrafine-grained interlayers of Ni and Ni-2%Cr alloy Open
The manuscript considers the effect of diffusion bonding pressure, as well as holding at different temperatures, on the strength of the joints between titanium alloy and stainless steel, formed by diffusion bonding through ultrafine-graine…
View article: Texture and grain-boundary misorientation distributions in Y123 ceramics deformed by torsion under pressure
Texture and grain-boundary misorientation distributions in Y123 ceramics deformed by torsion under pressure Open
Texture and grain-boundary misorientation distributions in different parts of the sample of the high-Tc superconductor Y123 deformed by torsion under pressure at 1008 °C to a twist angle of 30° were investigated. The average levels of the …
View article: Microstructure of superconducting ceramics YBa2Cu3O7–x sintered with addition of seed grains
Microstructure of superconducting ceramics YBa2Cu3O7–x sintered with addition of seed grains Open
The growth of seed grains of YBa2Cu3O7-x (Y123) ceramics in fine-grained matrix was studied. For this, two batches of powders were prepared. The first batch consisted only of fine-grained powder with a particle size less than 1 μm and was …
View article: Abnormal grain growth in YBa2Cu3O7−x high-Tc superconducting ceramics during high-temperature deformation
Abnormal grain growth in YBa2Cu3O7−x high-Tc superconducting ceramics during high-temperature deformation Open
Bimodal microstructure is formed in high-Tc superconducting ceramics YBa2Cu3O7-x deformed by torsion under pressure at 1008oC. The appearance of second peak on grain length distribution is associated with formation of abnormally coarse gra…
View article: Structure and phase transformations during hot deformation of Bi(Pb)2223 high-Tc superconductor: II. Texture and microstructure
Structure and phase transformations during hot deformation of Bi(Pb)2223 high-Tc superconductor: II. Texture and microstructure Open
The effect of hot deformation by torsion under quasi-hydrostatic pressure at temperature T=865C with the twist rates of ω1 = 5.14·10-5 and ω2 = 1.85·10-4 rpm on the basal plane texture strength (factor F), the mean colony length of the ma…