Rustam Kaibyshev
Belgorod State University
Ultimate tensile strengthDeformation (engineering)Strain rateCreepRecrystallization (metallurgy)DislocationComposite materialDynamic recrystallizationSuperplasticityMartensiteMetallurgyGrain sizeMaterials scienceAluminium alloyAlloyGrain boundaryAnnealing (metallurgy)MicrostructurePressingAustenite
483Publications
58H-index
8,844Citations
Publications 471
Newest
#1Vladimir Torganchuk (Belgorod State University)H-Index: 4
#2Andrey Belyakov (Belgorod State University)H-Index: 41
Last. Rustam KaibyshevH-Index: 58
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Abstract null null The mechanical behavior assisted by transformation-induced plasticity was studied in an Fe-0.2%C-10%Mn steel. The starting material was subjected to large strain warm rolling at 550 °C, which corresponds to two phase region with austenite and ferrite as 50:50. Correspondingly, this fraction of meta-stable austenite was obtained in order to provide the best combination of strength and ductility. The product of ultimate tensile strength and total elongation was 46 GPa×% owing to...
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#1Anna Bodyakova (National University of Science and Technology)
#2Arina Pilipenko (Belgorod State University)
Last. Rustam Kaibyshev (Belgorod State University)H-Index: 58
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Abstract null null The thermal stability of gradient microstructures in a Cu – 0.096%Cr – 0.07%Zr (wt.%) alloy subjected to equal channel angular pressing (ECAP) at 400 °C was studied. The microstructure after intense plastic straining and aging at 300–500 °C was almost the same. Aging at 600 °C led to the development of a partially recrystallized microstructure. After aging at 700 °C, the fully recrystallized microstructure evolved. An increase in ECAP passes from 1 to 12 decreased the recrysta...
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#1Anastasiia Dolzhenko (Belgorod State University)
#2Rustam Kaibyshev (Belgorod State University)H-Index: 58
Last. Andrey Belyakov (Belgorod State University)H-Index: 41
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Abstract null null A low-carbon low-alloyed steel subjected to tempforming exhibited high strength and outstanding impact toughness (KCV). The latter surprisingly increases from 412 J cm-2 at room temperature to 426 J cm-2 at 183 K. Such an unusual behaviour is attributed to delamination toughness, which is provided by the ultrafine lamellar microstructure. Namely, the rapid delamination crosswise to the impact direction blunts the crack and significantly increases the impact toughness.
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#2Igor VysotskiyH-Index: 8
Last. Rustam KaibyshevH-Index: 58
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#2Igor VysotskiyH-Index: 8
Last. Rustam KaibyshevH-Index: 58
view all 5 authors...
Abstract In this work, the relationship between the thermal cycle generated during friction-stir welding (FSW) of a 6061 aluminum alloy and the resulting grain structure was studied. To this end, FSW was conducted at measured welding temperatures from 340 to 450 °C and cooling rates from 15 to 70 °C/s, and the evolved microstructures were systematically examined using electron backscatter diffraction (EBSD). In all cases, the evolution of the grain structure was governed by continuous recrystall...
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#1Pavel Dolzhenko (Belgorod State University)H-Index: 3
#2Marina Tikhonova (Belgorod State University)H-Index: 9
Last. Andrey Belyakov (Belgorod State University)H-Index: 41
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The features of discontinuous dynamic recrystallization (DRX) in a highly-alloyed austenitic stainless steel were studied at temperatures of 800 °C to 1100 °C. Hot deformation accompanied by DRX was characterized by an activation energy of 415 kJ/mol. The frequency of the sequential DRX cycles depended on the deformation conditions; and the largest fraction of DRX grains with small grain orientation spread below 1° was observed at a temperature of around 1000 °C and a strain rate of about 10−3 s...
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#1Diana Yuzbekova (Belgorod State University)H-Index: 5
#2Anna Mogucheva (Belgorod State University)H-Index: 10
Last. Rustam Kaibyshev (Belgorod State University)H-Index: 58
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Abstract The nucleation and subsequent development of the Portevin-Le Chatelier bands during tensile deformation in a binary AlMg alloy was investigated by the digital image correlation technique. The following states of the material were employed for the current investigation: coarse-grained (CG), fine-grained (FG) after equal channel angular pressing (ECAP), severely strained (SS) after ECAP followed by cold rolling. Special attention was paid to the nucleation of an embryo band by maximizing ...
2 CitationsSource
Abstract In this work, a relationship between welding conditions, annealing behavior, and mechanical performance of friction-stir welded (FSWed) 6061-T6 aluminum alloy was examined. In the entire studied FSW range, the welded material was found to be unstable against abnormal grain growth during post-weld solutionizing treatment. However, a lowering of the FSW heat input tended to inhibit this undesirable phenomenon. In addition to the stir zone, the abnormal microstructural coarsening was also ...
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Abstract The coarsening of Laves phase in a Re-containing 10% Cr-3% Co-3% W steel during both creep and ageing at 923 K was investigated. The depletion of W solutes from the ferrite matrix is accompanied with the precipitation of Laves phase, wherein creep strain accelerates both these processes. The equilibrium W content in the ferritic matrix of 1.24 wt% and the volume fraction of Laves phase of 1.6% is reached after 500 h of creep and 1000 h of ageing. This is related to lower activation ener...
1 CitationsSource
#1Ivan ZuikoH-Index: 6
#2Sergey MironovH-Index: 34
Last. Rustam KaibyshevH-Index: 58
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Abstract The effect of welding temperature on thermal stability of friction-stir welded (FSWed) 2519 aluminum alloy was investigated. A lowering of the welding temperature below the particle dissolution threshold was shown to be a very effective way for suppression of abnormal grain growth during post-weld solution treatment. This effect was attributed to a prevention of the welded material from precipitation of fine dispersoids during subsequent annealing which resulted in relatively low Zener ...
2 CitationsSource