A5020079872- Metallurgy and Material Forming
- Metal Forming Simulation Techniques
- Metal Alloys Wear and Properties
- Astro and Planetary Science
- Microstructure and mechanical properties
- Spacecraft Dynamics and Control
- Planetary Science and Exploration
- Space Satellite Systems and Control
- High-Velocity Impact and Material Behavior
- Advanced Surface Polishing Techniques
- Titanium Alloys Microstructure and Properties
- Aluminum Alloy Microstructure Properties
- Mechanical and Thermal Properties Analysis
- Microstructure and Mechanical Properties of Steels
- Aerospace Engineering and Control Systems
- Fatigue and fracture mechanics
- Diverse Industrial Engineering Technologies
- Methane Hydrates and Related Phenomena
- Material Properties and Applications
- Metallurgical Processes and Thermodynamics
- Industrial Engineering and Technologies
- Spacecraft and Cryogenic Technologies
- Space Exploration and Technology
- Powder Metallurgy Techniques and Materials
- Agricultural Engineering and Mechanization
National Research University Higher School of Economics
2015-2025
Moscow State Institute of Electronics and Mathematics
2006-2023
Northern (Arctic) Federal University
2021
Ufa State Aviation Technical University
2019
Space Research Institute
2016-2018
National Transport University
2016
Russian Academy of Sciences
2009-2011
VSB - Technical University of Ostrava
2008-2009
The paper focuses on developing constitutive models for superplastic deformation behaviour of near-α titanium alloy (Ti-2.5Al-1.8Mn) at elevated temperatures in a range from 840 to 890 °C and strain rate 2 × 10−4 8 s−1. Stress–strain experimental tensile tests data were used develop the mathematical models. Both, hyperbolic sine Arrhenius-type model artificial neural-network constructed. A comparative study competence developed predict this was made. fitting results suggest that has higher...
Determining a desirable strain rate-temperature range for superplasticity and elongation-to-failure are critical concerns during the prediction of superplastic forming processes in α + β titanium-based alloys. This paper studies deformation behaviour related microstructural evolution conventionally processed sheets Ti-6Al-4V alloy rate 10-5-10-2 s-1 temperature 750-900 °C. Thermo-Calc calculation analysis as-annealed samples were done order to determine α/β ratio grain size phases prior...
Electrocatalytic CO2 reduction reaction (CO2RR) to valuable multicarbon (C2+) fuels and chemicals presents a promising strategy mitigate atmospheric accumulation promote the closure of carbon cycle. However, significant challenges persist in achieving both high product selectivity sustained stability CO2RR. In this study, catalytic performance (Fe,Co,Ni,Cu)3O4 medium entropy oxide (MEO) nanoparticles anchored on reduced graphene (rGO) was evaluated for The MEO-rGO catalyst exhibited...
Determination of material constants describing its behavior during superplastic gas forming is the main subject this study. The feature free bulging tests stress-strain conditions which are very similar to ones occurring in most processes. On other hand, interpretation results such a complicated procedure. paper presents simple technique for characterization materials superplasticity by tests, based on inverse analysis. idea semianalytical solution direct problem instead finite element...
In this work, a new experimental-numerical technique is developed in order to investigate the constitutive behaviour of sheet material conditions superplastic forming. The principal feature that unlike classical tensile testing it allows one obtain stress-strain curves for formed biaxial tension produced by free bulging process. These are much closer ones undergoes during forming Consequently, they give more accurate information about than coming from tests data. drawback strain (and...
Superplastic forming has already been proven as a practical solution for manufacturing lightweight components in niche applications such the aerospace and luxury cars industries. The demand to produce will continue with limited nature of energy resources available today. Therefore, superplastic materials are expected stay potential candidates applications. In addition, offers many unique advantages over conventional techniques including greater design flexibility, relatively low tooling...
Tensile testing is widely used for the mechanical characterization of materials subjected to superplastic deformation. At same time, it known that obtained flow data are affected by specimen geometry. Thus, they characterize rather than material. This work provides numerical analysis aimed study how material behavior affects results tensile tests. The simulations were performed finite element method in Abaqus software, utilizing user-defined procedures calculation forces acting on...
This study proposes a method for determining the material constitutive equations and optimal forming conditions on basis of free bulging tests. The blow-forming tests were carried out at temperature 420 °C using aluminum alloy (AMg-6) sheets 1 mm thickness. Each test was performed constant pressure. For each fixed value pressure, series experiments with different times to obtain evolutions dome height H thickness s. These data processed by proposed flow stress dependence effective strain...
Binary Al–Ni, Al–Mg and ternary Al–Mg–Ni alloys containing various dispersions volume fraction of second-phase particles crystallisation origin were compressed in a temperature range 200–500 °C at strain rates 0.1, 1, 10, 30 s−1 using the Gleeble 3800 thermomechanical simulator. Verification axisymmetric compression tests was made by finite-element modelling. Constitutive models hot deformation constructed effective activation energy determined. It found that flow stress is lowered...