А. А. Круглов

ORCID: 0000-0002-1788-5760
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About
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Research Areas
  • Material Properties and Applications
  • Titanium Alloys Microstructure and Properties
  • Metal Forming Simulation Techniques
  • Metallurgy and Material Forming
  • Engineering Technology and Methodologies
  • Engineering and Environmental Studies
  • Microstructure and mechanical properties
  • Additive Manufacturing Materials and Processes
  • Material Properties and Failure Mechanisms
  • Radiation Detection and Scintillator Technologies
  • High-Velocity Impact and Material Behavior
  • Radioactive element chemistry and processing
  • Lanthanide and Transition Metal Complexes
  • Industrial Engineering and Technologies
  • Nuclear Physics and Applications
  • Geotechnical and Geomechanical Engineering
  • Advanced Welding Techniques Analysis
  • Metal and Thin Film Mechanics
  • Luminescence Properties of Advanced Materials
  • Crystal structures of chemical compounds
  • Advanced Surface Polishing Techniques
  • Advanced materials and composites
  • Engineering Diagnostics and Reliability
  • Inorganic Chemistry and Materials
  • Organometallic Compounds Synthesis and Characterization

Joint Institute for Nuclear Research
2012-2022

Institute of Metal Superplasticity Problems
2012-2022

Ufa State Petroleum Technological University
2012-2018

Russian Academy of Sciences
1994-2014

Ufa State Aviation Technical University
2014

Institute of Engineering Physics
1993-1995

Moscow Engineering Physics Institute
1993-1995

American Petroleum Institute
1987

Institute of Geology Ufa Scientific Center
1987

Institute of Petroleum Chemistry
1966

10.1016/0020-7403(94)00081-t article EN International Journal of Mechanical Sciences 1995-05-01

10.1016/0168-9002(93)91434-o article EN Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 1993-03-01

A critical analysis of approaches to find constitutive relations from the tests on uniaxial and two axial loading is presented. Then we report methodology fitting parameters for superplastic forming based results cone cup elongated wedge tests. Optimal angles are estimated analytically also finite element simulations. Our comparison experimental numerical simulations corresponding in frame commercial software such as ANSYS10.0 (ED). We carry out different sets chosen relation values friction...

10.4028/www.scientific.net/kem.433.319 article EN Key engineering materials 2010-03-01

Abstract The superplastic forming process of the VT6 titanium alloy three‐layered hollow structures with goffered filler are investigated. Based on results experimental studies and finite element modeling, we determine rational parameters such as gas pressure increase rate, when flow condition is satisfied for ribs, processing time minimal.

10.1002/mawe.201200042 article EN Materialwissenschaft und Werkstofftechnik 2012-09-01

A method is proposed which allows one to search for a solution inverse problems of identifying constitutive relations from the results technological experiments. The uses simplified mathematical models plastic metal forming processes based on membrane theory shells, calculations material constants K and m entering Backofen’s relation superplasticity experiments carried out directly equipment. differs others by fact that its implementation only two test formings hemispherical domes at...

10.22226/2410-3535-2017-1-68-71 article EN cc-by Letters on Materials 2017-01-01

Application of the conventional superplasticity (SP) allows producing unique hollow structures. One remarkable example is titanium blade air engine fan produced by Rolls-Royce. However, high temperature Ti-6Al-4V alloy processing (~ 927 °С) limits wide industrial application SP. On base experimental data examples superplastic forming (SPF) structures for aerospace out ultrafine-grained (UFG) VT6 (Ti-6Al-4V) using an effect low SP are demonstrated. We used two-phase in VSMPO, Verhnyaya Salda,...

10.22226/2410-3535-2015-2-185-188 article EN Letters on Materials 2015-01-01

Application of the conventional superplasticity (SP) allows producing unique hollow structures. One remarkable example is titanium blade air engine fan produced by Rolls-Royce. However, high temperature alloys processing (~ 927 °С) limits wide industrial application SP. The solution mentioned issue can be found through low-temperature Ti-6Al-4V alloy with ultrafine grain structure at range 600 ­ 800 °С has enough ductility resources for superplastic forming (SPF) parts complicated shape....

10.4028/www.scientific.net/msf.838-839.610 article EN Materials science forum 2016-01-01

In the present work, process of superplastic forming hemispherical shells from blanks different profiles on basis computer modeling is considered. A relevant task in to reduce thickness difference, which will significantly improve quality their geometric characteristics with a general reduction cost production. It shown that shell billet constant fixed flange leads an inevitable appearance differenses. has been number works that, case made titanium alloys, difference exceeds 50 %. Various...

10.22226/2410-3535-2021-4-548-552 article EN Letters on Materials 2021-12-01

Проведены результаты экспериментов по сварке давлением титанового сплава ВТ6 в условиях низкотемпературной сверхпластичности. Показано, что чем ниже температура, тем выше должно быть значение давления относительно напряжения течения при этой температуре. При этом качество твердофазного соединения существенно зависит от степени деформации.

10.22226/2410-3535-2012-3-161-165 article RU Letters on Materials 2012-01-01

The mechanical behavior at shock loading of samples from titanium alloy VT6 with different structural: coarse-crystalline lamellar morphology phases (CC), microcrystalline globular (MC), nanostructure (NS) is analyses. Results tests showed that in the CC and MC structures have higher level impact toughness comparison nanostructure. With reduction size structural components work crack nucleation raises on % 55, propagation reduces 70. Impact decreases 20. picture fracture reflects...

10.22226/2410-3535-2012-2-99-102 article EN Letters on Materials 2012-01-01

Uniaxial tension and superplastic forming experiments are performed with ultra fine grained titanium VT6 alloy under conditions of low temperature superplasticity at temperatures 600 650оС. The initial mean grain size in was 0,2 mm. Pores were not display the steady state up to 600% sample extension. It is revealed accelerated a b-phase growth stimulated by deformation.<br /> Ключевые слова: Низкотемпературная сверхпластичность, поры, сверхпластическая формовка, титановый сплав ВТ6.<br <br

10.22226/2410-3535-2013-4-292-294 article EN cc-by Letters on Materials 2013-01-01

Corrugated core panels manufactured by methods of superplastic forming concurrent with diffusion bonding (SPF/DB) are promising for the production high specific strength articles. One serious problems arising in corrugated is concerned formation outer folds. The cause folding uneven deformation skin sheets. In this study, process a panel from titanium alloy VT6 (analogue Ti-6Al-4V) computer simulation considered. Finite element modeling carrying out using ANSYS software. formulation boundary...

10.22226/2410-3535-2018-2-174-177 article EN Letters on Materials 2018-01-01
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