I. V. Vysotskiy
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Research Subjects
Research Interests
I. V. Vysotskiy has a total of 7 co-authors. Here are the top co-authors by number of shared publications:
- Daria Zhemchuzhnikova
Belgorod State University
1 shared publication - Dmitriy Shaysultanov
Laboratory of Bulk Nanostructured Materials, Belgorod State University, 308015 Belgorod, Russia
1 shared publication - Nikita Stepanov
Institute of Laser and Welding Technologies, Saint Petersburg State Marine Technical University, Russian Federation
1 shared publication - Rustam Kaibyshev
Moscow Timiryazev Agricultural Academy, Russian State Agrarian University, Moscow 127550, Russia
1 shared publication - Sergey Malopheyev
Belgorod State National Research University
1 shared publication - Sergey Mironov
Belgorod National Research University, Belgorod, Russia
1 shared publication
Latest Publications
- Open Access
On the Fatigue Performance of Friction-Stir Welded Aluminum Alloys
This work was undertaken in an attempt to ascertain the generic characteristics of fatigue behavior of friction-stir welded aluminum alloys. To this end, different alloy grades belonging to both the heat-treatable and non-heat-treatable types in both the cast and wrought conditions were studied. The analysis was based on the premise that the fatigue endurance of sound welds (in which internal flaws and surface quality are not the major issues) is governed by residual stress and microstructure. Considering the relatively low magnitude of the residual stresses but drastic grain refinement attributable to friction-stir welding, the fatigue performance at relatively low cyclic stress was deduced to be dictated by the microstructural factor. Accordingly, the fatigue crack typically nucleated in relatively coarse-grained base material zone; thus, the fatigue strength of the welded joints was comparable to that of the parent metal. At relatively high fatigue stress, the summary (i.e., the cyclic-plus residual-) stress may exceed the material yield strength; thus, the fatigue cracking should result from the preceding macro-scale plastic deformation. Accordingly, the fatigue failure should occur in the softest microstructural region; thus; the fatigue strength of the welded joint may be inferior to that of the original material.
Open AccessOn the Fatigue Performance of Friction-Stir Welded Aluminum Alloys
This work was undertaken in an attempt to ascertain the generic characteristics of fatigue behavior of friction-stir welded aluminum alloys. To this end, different alloy grades belonging to both the heat-treatable and non-heat-treatable types in both the cast and wrought conditions were studied. The analysis was based on the premise that the fatigue endurance of sound welds (in which internal flaws and surface quality are not the major issues) is governed by residual stress and microstructure. Considering the relatively low magnitude of the residual stresses but drastic grain refinement attributable to friction-stir welding, the fatigue performance at relatively low cyclic stress was deduced to be dictated by the microstructural factor. Accordingly, the fatigue crack typically nucleated in relatively coarse-grained base material zone; thus, the fatigue strength of the welded joints was comparable to that of the parent metal. At relatively high fatigue stress, the summary (i.e., the cyclic-plus residual-) stress may exceed the material yield strength; thus, the fatigue cracking should result from the preceding macro-scale plastic deformation. Accordingly, the fatigue failure should occur in the softest microstructural region; thus; the fatigue strength of the welded joint may be inferior to that of the original material.
- Open Access
- 19 November 2019
- Published by AIP Publishing in AIP Conference Proceedings
- Vol. 2167 (1) , 020326
Effect of friction stir welding on the structure and mechanical properties of the CoCrFeNiMn-0.9%C alloy
CoCrFeNiMn-0.9%C high entropy alloy (HEA) was produced by self-propagating high-temperature synthesis. The as-sintered alloy was cold rolled and annealed at 900°C to produce refined microstructure before friction stir welding (FSW). The structure of the annealed alloy consisted of a recrystallized face-centered cubic (fcc) matrix with a grain size of 9.2 µm and fine M23C6 carbides with 2% volume fraction. Good quality of butt joints after FSW was observed. It was established that an increase of the tool rotation speed from 600 to 1000 rpm increased the average grain size from 3.2±0.7 µm to 4.6±2.4 µm, respectively. The structure of the stir zone contained M23C6 carbides in all conditions. Hardness and strength of the joints decreased with the increase of tool rotation speed due to higher grain size, while ductility increased.
- 19 November 2019
- Published by AIP Publishing in AIP Conference Proceedings
- Vol. 2167 (1) , 020326
Open AccessEffect of friction stir welding on the structure and mechanical properties of the CoCrFeNiMn-0.9%C alloy
CoCrFeNiMn-0.9%C high entropy alloy (HEA) was produced by self-propagating high-temperature synthesis. The as-sintered alloy was cold rolled and annealed at 900°C to produce refined microstructure before friction stir welding (FSW). The structure of the annealed alloy consisted of a recrystallized face-centered cubic (fcc) matrix with a grain size of 9.2 µm and fine M23C6 carbides with 2% volume fraction. Good quality of butt joints after FSW was observed. It was established that an increase of the tool rotation speed from 600 to 1000 rpm increased the average grain size from 3.2±0.7 µm to 4.6±2.4 µm, respectively. The structure of the stir zone contained M23C6 carbides in all conditions. Hardness and strength of the joints decreased with the increase of tool rotation speed due to higher grain size, while ductility increased.