Work on departmental topics 39/7 “Development and research of welding technologies for metal structures of machines and engineering facilities for civil and defence purposes from new high-strength steels thicker than 30 mm with a yield strength of 1200 MPa” began in 2019.

• Technology of double-arc surfacing under a flux layer at restoration of worn surface of flanges of railway wheels of freight cars (repair companies of “Ukrzaliznytsia”, Ukraine, repair companies of “Russian Railways”, Russia, “KITECH”, Republic of Korea).
• Technologies for gas-shielded restoration surfacing of elements of the tread profile of tram wheels (Mozyr, Republic of Belarus, Kyivpastrans, Ukraine).
• Technologies of repair welding of fatigue fractures and restoration of worn surfaces of crushing and processing equipment of mining enterprises (OJSC “Karelskii Okatish”, Russia, OJSC Poltava Mining and Metallurgical Plant, Kryvbas Mining and Metallurgical Plant, Ukraine).
• Technologies of repair by welding of fatigue fractures of press and forging equipment (OJSC “Lower Dnieper Pipe Plant”, OJSC “Centravis Production Ukraine”, OJSC “SKF Ukraine”, OJSC “Vulkan”, Ukraine).
• Technology of repair of operational damages of elements of subway escalator drives (PU “Kyiv Metro”, Ukraine).
• Technology of repair by welding of fatigue fractures in units of metal structures of coal galleries (Cherkasy CHP, Ukraine).
• Technology of welding of metal structures of the main units of the drum unloading trolley (OJSC “Inguletsky MPP”, Ukraine).
• Technology of welding the closing seam of the spiral chamber and pressure water supply of the hydraulic unit (Dniester PSP, Ukraine).
• Welding technologies for modernization and repair of metal structures of girder constructions of railway bridges (bridges across the Teteriv River, Vorskla River, Ukraine).
• Technology of welding load-bearing metal structures of NSC “Olympic” in Kiev (LLC “Master Profi Ukraine”, Ukraine).
• Technology of mechanized welding of metal structures of the HP 7500 supercharger wheel housing made of high-strength steel of 10G2MBYu type.

Valeriy Dmytrovych Poznyakov, Oleksandr Anatolijovych Gaivoronskii – Winner of 2019 E.O.Paton Prize, Series of works “Development of technologies for the manufacture and repair of metal structures of machines and engineering constructions for civil and military purposes from high-strength steels with the yield strength of 350… 1200 MPa”;

Distinctions of researchers

Valeriy Dmytrovych Poznyakov, Oleksandr Anatolijovych Gaivoronskii – Winner of 2019 E.O.Paton Prize, Series of works “Development of technologies for the manufacture and repair of metal structures of machines and engineering constructions for civil and military purposes from high-strength steels with the yield strength of 350… 1200 MPa”;

Valeriy Dmytrovych Poznyakov,  State Prize of Ukraine in the field of science and technology for 2015

Zavdoveev Anatoliy Viktorovych, Award of the President of Ukraine for Young Scientists for 2015, “Energy-efficient means of obtaining high-quality low-carbon steel wire by means of intensive plastic deformation”

1. Zavdoveev, A., Pozniakov, V., Baudin, T. et al. Optimization of the pulsed arc welding parameters for wire arc additive manufacturing in austenitic steel applications. Int J Adv Manuf Technol 119, 5175–5193 (2022). https://doi.org/10.1007/s00170-022-08704-4
2. Anatoliy Zavdoveev, Valeriy Poznyakov, Thierry Baudin, Massimo Rogante, Hyoung Seop Kim, Mark Heaton, Yuriy Demchenko, Victor Zhukov, Mykola Skoryk, Effect of heat treatment on the mechanical properties and microstructure of HSLA steels processed by various technologies, Materials Today Communications,
3. Volume 28, 2021, 102598, ISSN 2352-4928, https://doi.org/10.1016/j.mtcomm.2021.102598.
4. Zavdoveev, A., Poznyakov, V., Baudin, T., Heaton, M., Kim, H.S., Acquier, P., Skory, M., Rogante, M. and Denisenko, A. (2021), Welding Thermal Cycle Impact on the Microstructure and Mechanical Properties of Thermo–Mechanical Control Process Steels. steel research int., 92: 2000645. https://doi.org/10.1002/srin.202000645
5. Kostin, V.А., Poznyakov, V.D., Berdnikova, O.М. et al. Influence of Structural Transformations on the Mechanical Properties of Welded Joints of Armor Steels. Mater Sci 56, 472–480 (2021). https://doi.org/10.1007/s11003-021-00453-1
6. Zavdoveev, A., Baudin, T., Pashinska, E., Kim, H.S., Brisset, F., Heaton, M., Poznyakov, V., Rogante, M., Tkachenko, V., Klochkov, I. and Skoryk, M. (2021), Continuous Severe Plastic Deformation of Low-Carbon Steel: Physical–Mechanical Properties and Multiscale Structure Analysis. steel research int., 92: 2000482. https://doi.org/10.1002/srin.202000482
7. Zavdoveev, A., Len, A. & Pashinska, E. Small Angle Neutron Scattering Study of Nanoscale Structure of Low-Carbon Steel After Rolling with Shear Followed by Cold Drawing. Met. Mater. Int. 27, 481–487 (2021). https://doi.org/10.1007/s12540-020-00766-x
8. Zavdoveev, A., Rogante, M., Poznyakov, V., Heaton, M., Acquier, P., Kim, H. S., Baudin, T., & Kostin, V. (2020). Development of the PC-GMAW welding technology for TMCP steel in accordance with welding thermal cycle, welding technique, structure, and properties of welded joints. Reports in Mechanical Engineering, 1(1), 26-33. https://doi.org/10.31181/rme200101026z
9. Poznyakov, V.D., Markashova, L.I., Shelyagin, V.D. et al. Cold Cracking Resistance of Butt Joints in High-Strength Steels with Different Welding Techniques. Strength Mater 51, 843–851 (2019). https://doi.org/10.1007/s11223-020-00132-7
10. Ostash, О.P., Kulyk, V.V., Poznyakov, V.D. et al. Influence of the Modes of Heat Treatment on the Strength and Cyclic Crack-Growth Resistance of 65G Steel. Mater Sci 54, 776–782 (2019). https://doi.org/10.1007/s11003-019-00263-6
11. Pozniakov, V., L. Markashova, O. Berdnikova, T. Alekseienko, and S. Zhdanov. “Structure and Crack Resistance of N-A-XTRA-70 Steel Joints Manufactured by Hybrid Laser-Arc Welding.” Materials Science Forum. Trans Tech Publications, Ltd., July 2018. https://doi.org/10.4028/www.scientific.net/msf.927.29.
12. Zavdoveev Anatoliy, Baudin Thierry, Pashinska Elena, and Skoryk Mykola Preparation of metallographic specimens for electron backscatter diffraction Emerging Materials Research 2017 6:2, 260-264  https://doi.org/10.1680/jemmr.16.00117

Welding equipment: semiautomatic machines of PDG types – 508 U3, Paton BP-601, A-1416, A – 1412 automatic machines, VDU type DC rectifiers, welding rotators M 11040 and M 11050.

Test equipment:

• universal machine UMP – 02 for fatigue testing of welded joints at cyclic bending loads;
• Friedland installation for static bending tests of the welds;

• Development of technologies of automated pulse-arc gas-shielded welding of structural steels and special-purpose steels.
• Development of technologies of wire arc additive manufacturing (WAAM) of the high entropy alloys (HEAs) with metal powder cored wire (MPCW).