@misc{BobryninaLarionovaKoltsovaetal., author = {Bobrynina, E. V. and Larionova, T. V. and Koltsova, Tatiana S. and Ginzburg, S. A. and Michailov, Vesselin}, title = {Effect of alumina addition on weld deposits microstructure at the welding of carbon steel}, series = {Materials Physics and Mechanics}, volume = {Vol. 38}, journal = {Materials Physics and Mechanics}, number = {1}, issn = {1605-8119}, doi = {10.18720/MPM.3812018_4}, pages = {26 -- 32}, abstract = {The formation of acicular ferrite in the structure of weld deposits when welding carbon steels is often associated with the introduction of nonmetallic additives into the electrode material. Fe-alumina composite powders with alumina particles less than 1 µm were used as a filler for cored welding wire and the influence of aluminum oxide additives up to 2,5 wt.\% on the structure of the welded seam was studied. It was shown that the addition of aluminum oxide to the welding wire led to the initiation of the formation of intragranular acicular ferrite in the weld deposit and to a more even distribution of hardness through the zones of weld seam.}, language = {en} } @misc{KoltsovaMichailov, author = {Koltsova, Tatiana S. and Michailov, Vesselin}, title = {Hybrid Composite Materials Aluminum-Carbon Nanostructures}, series = {Materials science medziagotyra}, volume = {21}, journal = {Materials science medziagotyra}, number = {3}, issn = {1392-1320}, pages = {372 -- 375}, language = {en} } @misc{KoltsovaTolochkoMichailov, author = {Koltsova, Tatiana S. and Tolochko, Oleg V. and Michailov, Vesselin}, title = {Effect of hot pressing modes on the structure and properties of an aluminum-carbon nanofibers' composite material}, series = {Metal Science and Heat Treatment}, volume = {56}, journal = {Metal Science and Heat Treatment}, number = {9-10}, issn = {0026-0673}, doi = {10.1007/s11041-015-9793-6}, pages = {525 -- 530}, language = {en} } @misc{KoltsovaShakovVoznyakovskiyetal., author = {Koltsova, Tatiana S. and Shakov, Fedor M. and Voznyakovskiy, A. A. and Lyashkov, A. I. and Tolochko, Oleg V. and Rudskoy, Andrey I. and Nasibulin, Albert G. and Michailov, Vesselin}, title = {Fabrication of a Compacted Aluminum-Carbon Nanofiber Material by Hot Pressin}, series = {Technical Physics}, volume = {59}, journal = {Technical Physics}, number = {11}, issn = {1063-7842}, doi = {10.1134/S1063784214110139}, pages = {1626 -- 1630}, language = {en} } @misc{GinzburgMorozovaKlosheketal., author = {Ginzburg, Svetlana and Morozova, Iuliia and Kloshek, Alexander and Ossenbrink, Ralf and Michailov, Vesselin and Bobrynina, Elizaveta and Koltsova, Tatiana S. and Tolochko, Oleg V. and Ko{\c{c}}ak, Mustafa and Ozbek, Sunullah and Morozova, Iuliia}, title = {Addition of nanoparticles to flux cored wires for the nucleation of acicular ferrite microstructure in weld metals of the high-strength low-alloy steel}, series = {Welding and Cutting}, volume = {19}, journal = {Welding and Cutting}, number = {1}, issn = {1612-3433}, pages = {48 -- 53}, abstract = {For the reliability of many welded structures like pipelines or offshore wind parks, it is necessary to ensure high mechanical properties such as strength and toughness of the entire material. In order to improve quality of weld joints, flux cored rods and wires containing different nanoparticles (ZrO2, LaB6 and Al2O3) were manufactured and welded with the TIG and MAG welding processes. Influence of these nanoparticles on the microstructure and mechanical properties of the weld joints were investigated. The acicular ferrite and improved strength of the weld metals were observed by the addition of 0.2 wt.\% of iron powder with ZrO2 nanoparticles to the filling of flux cored wires.}, language = {en} }