Публікації. Монографії (відділ 36)
Постійне посилання зібранняhttps://archive.ipms.kyiv.ua/handle/123456789/125
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Документ Structural and phase transformations in titanium alloys induced by ferrosilicon alloying(BOHR Publishers PVT LTD, 2024) Oksana Baranovska; Gennadii Bagliuk; Olena Olifan; Seghii Korichev; Yaroslav Sytnyk; Ahanov AndriiThe aim of this study was to investigate the structural and phase transformations in titanium alloys induced by ferrosilicon alloying and to enhance the physical and mechanical properties of titanium-based composite materials. These findings demonstrate that the use of FS65 ferroalloy as an alloying addition leads to active interaction with titanium hydride, resulting in the formation of a complex heterophase system. Using FS65 ferroalloy, boron carbide (B4C), and carbon (C) as alloying additions, the research identifies the optimal synthesis temperature and examines the resulting microstructures and phase formations. The optimal synthesis temperature was found to be 1250◦C. At this temperature, the phases TiC, TiSi, FeTi, and Ti3SiC2 were observed in the system 65 TiH2 – 30 FeSi – 5 C (wt.%), while TiC, Ti5Si4, Fe2Ti, and TiB2 were identified in the system 65 TiH2 – 30 FeSi – 5 B4C (wt.%). The addition of 5% B4C resulted in a finer microstructure with grain sizes ranging from 0.5 to 5 μm, compared to grain sizes of 5–10 μm with the addition of 5% C. The presence of B4C also promoted the formation of TiB2. The synthesized compacts, characterized by a fine-pored, spongy structure, are easily crushed, making them suitable for use as dispersed fillers in composite materials.Документ The influence of electrochemical corrosion on the structure and phase composition of a sintered multicomponent titanium-based composite in a 3% NaCl solution(G. V. Kurdyumov Institute for Metal Physics, National Academy of Sciences of Ukraine, 2023) Oksana Baranovska; Gennadii Bagliuk; Oleksandr Bykov; Oleksandr Hrypachevsky; Viktor Talash; Yulia Rudenko; Dmytro BaranovskyiThe electrochemical corrosion properties in a 3% NaCl solution of the titanium-based multicomponent composite of the 65TiH2– 30FeSiMn–B4C system were investigated. The kinetics and the mechanism of anode dissolution of metals and oxidation of specimens have been studied by using polarization curves, chemical and x-ray phase analyses. It was found a decrease in the titanium carbide peaks on the X-Ray defractions also the titanium silicon carbide almost disappears after immersing the sample in a 3% NaCl solution. Formation of silicon and boride phases of titanium in the synthesis process leads to an increase in corrosion resistance due to the inhibition of the velocities of both the anode and cathode processes