Персона: Столяров, Владимир Владимирович
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Институт физико-техничеcких интеллектуальных систем
Институт физико-технических интеллектуальных систем впервые в стране обеспечивает комплексную подготовку специалистов по созданию киберфизических устройств и систем самого различного назначения – основного вида технических устройств середины 21 века. ИФТИС реализует «дуальную» модель образования, в рамках которой направляет студентов на стажировку и выпускников для трудоустройства на передовые предприятия, занятые созданием инновационных киберфизических продуктов, в первую очередь, на предприятия ГК «Росатом». Основным индустриальным партнером ИФТИС является ведущее предприятие ГК «Росатом» — ФГУП «ВНИИА им. Н.Л. Духова».
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- ПубликацияТолько метаданныеMechanical Properties of VNS9-Sh TRIP Steel at Various Test Temperatures(2020) Terent'ev, V. F.; Frolova, A. V.; Sirotinkin, V. P.; Stolyarov, V. V.; Столяров, Владимир Владимирович© 2020, Pleiades Publishing, Ltd.Abstract: The influence of the test temperature from the range from +400 to –120°C on the mechanical properties and the phase composition of austenitic–martensitic VNS9-Sh TRIP sheet steel is studied. As the deformation temperature increases, the ultimate tensile strength is shown to decrease sharply from 1600 MPa at +20°C to 700 MPa at 400°C. A yield plateau disappears from static stress–strain curves beginning from a deformation temperature of 100°C. The strain-induced martensite content decreases from 84% at a deformation temperature of 20°C to 42% at 400°C. The strain-induced martensite content increases significantly during deformation in the temperature range from 0 to –120°C. The plasticity is maximal at –100°C: it decreases when the temperature decreases or increases.
- ПубликацияТолько метаданныеInfluence of strain rate and strain at temperature on TRIP effect in a metastable austenitic stainless steel(2020) Tilak, Kumar, J. V.; Sudha, J.; Padmanabhan, K. A.; Frolova, A. V.; Stolyarov, V. V.; Столяров, Владимир Владимирович© 2020 Elsevier B.V.Metastable TRIP (TRansformation-Induced Plasticity) steel strips with a microstructure comprising ferrite, retained austenite and martensite were subjected to tensile tests at different strain rates of 10−5s−1, 10−4s−1, 10−3s−1 and temperatures 27 °C, 50 °C and 100 °C. The TRIP steel specimens exhibited very high tensile strengths (up to ~1700 MPa) in tests carried out at room temperature, which is attributed to the TRIP effect. Thermal stability of the phases present in the TRIP steel in the as-received condition was assessed by in-situ high temperature XRD and DSC (Differential Scanning Calorimetry) analysis to determine the retained austenite decomposition temperature. Microstructural analysis by XRD, optical microscopy and electron microscopy was used before and after the tensile tests to identify the features present at micro- and nano-scales, which are responsible for the observed mechanical properties. Macrographs taken from the surface of the specimens after the tensile tests showed the presence of Lüders bands and their occurrence was concurrent with the TRIP effect. The effect of strain rate and temperature on the TRIP effect and the associated mechanical response are discussed in detail.
- ПубликацияОткрытый доступAcousto-and electroplastic effects in alloy with reversible martensitic transformation(2019) Tsarenko, Y. V.; Rubanik, V. V.; Rubanik, V. V.; Frolova, A. V.; Stolyarov, V. V.; Столяров, Владимир Владимирович© Published under licence by IOP Publishing Ltd. The article discusses the deformation behaviour of T1 49.3 Ni 50.7 alloy in the austenitic state during tensile tests under pulsed current and ultrasound at ambient temperature and 200 °C. The stress jumps from a combination of ultrasound and / or single pulse current are analyzed. The direction and magnitude of stress jumps are determined by the phase state of the material, the degree of deformation and the presence of electroplastic (EPE) and acoustoplastic (APE) effects. The different direction of the stress jumps in this shape memory alloy is related to the position of the deformation temperature relative to the deformation martensite formation temperature.
- ПубликацияТолько метаданныеTensile Strain of Alloys with the Martensitic Transformation under the External Impact(2019) Tsarenko, Y. V.; Rubanik, V. V.; Rubanik, V. V.; Frolova, A. V.; Stolyarov, V. V.; Столяров, Владимир Владимирович© 2019, Allerton Press, Inc.Abstract: The tensile strain of Ti50 – хNi50 + х shape-memory alloys in the austenitic and martensitic states is considered during the alternating action of a pulsed electric current and ultrasound at room temperature and 200°С. The changes in stress are analyzed at different combinations of ultrasound and/or current, the direction and volume of which depend on the phase state of the material and the degree of strain. The difference between the directions of the changes in stress in shape-memory alloys is associated with the position of the temperature of deformation relative to that of the formation of martensite.