Research, assessment and increase in the strength of steels and economic efficiency of the use of innovative materials in construction
DOI:
https://doi.org/10.32347/2410-2547.2025.115.262-270Keywords:
economic efficiency, alloying, modifiers, ultra-disperse powders, crack resistance, durabilityAbstract
Systematic and comprehensive studies of micromodified steels (seven grades) alloyed with vanadium, chromium, cerium, nickel, molybdenum, niobium were carried out, from which reinforcing bars with a diameter of 22 mm were manufactured on a rolling mill. After that, the bars were subjected to heat treatment to obtain various structures, in particular, ferrite-pearlitic, pearlitic, structures of incomplete austenite transformation (bainite transformation) - structures of sorbite and trostite, as well as martensite. After that, samples were prepared from the reinforcing bars for testing fatigue strength (fatigue), static mechanical properties {strength limit σВ , MPa , yield strength σТ , MPa , relative elongation – δ (%), transverse narrowing – ψ (%)}, as well as criteria of modern fracture mechanics {К1С, MPa˖m1/2, δC, mm, RMC , MPa}. In addition, corrosion rate indicators were also determined in corrosion-aggressive environments containing chloride ions, СО2, sulfuric acid anions, as well as in bacterial model environments with bacteria of the SVB, GTB and ZB types.
Based on the use of innovative steels, technical re-equipment of energy transport engineering and the hydraulic engineering industry is possible. The resource of such structures for various purposes increases from 50 to 100% compared to standard ones. Therefore, it is necessary to continue work on improving the technologies for obtaining such high-quality materials on a metal basis in order to improve the complex of their properties. The strategy for such a breakthrough of powder metallurgy in the economy should be based on the development of development priorities and the consistent implementation of short-term target programs at the national and regional levels, as well as the development of a long-term comprehensive program at the national level and bringing the work to practical implementation. Therefore, it is also necessary to significantly expand the funding of this area.
References
Nauchnaia sessyia obshcheho sobranyia NANU, 19 dekabria 2002h (Scientific session of the general meeting of NASU, December 19, 2002) // Visnyk Natsionalnoi akademii nauk Ukrainy.- 2003.- №5.- S.8-11.
Makarenko V.D., Muravjev K.A., Kalyanov A.I. Special features of manual ans welding of root joints in nonrotating welds in pipelines in Westem Siberia.-Welding International.-2006.- №20(5).-P.410-413
Okada T., Khattory S. Zavysymost mezhdu kontsenratsyei soly v vode y soprotyvlenym korrozyonnoi ustalosty konstruktsyonnoi staly, soderzhashchei 0.37% uhleroda (Relationship between salt concentration in water and corrosion fatigue resistance of structural steel containing 0.37% carbon). –Trudy Amerykanskoho obshchestva ynzhenerov-mekhanykov. –Yzd-vo Myr: №3.-1085.-S.98-107.
Makarenko V.D., Maksymov S.Iu., Vynnykov Yu.L. y dr. Koroziini ruinuvannia hidrotekhnichnykh sporud (Corrosion destruction of hydraulic structures)// Kyiv: Vydavnychyi tsentr NUBiP Ukrainy. – 2021.-195s.
Korrozyia: spravochnyk (Corrosion: reference book ) / pod red. L.L. Shraiera; per. s anhl. M.: Metallurhyia, 1981. 632 s.
Lykverman A.Y. Effektyvnaia systema zashchyty metallycheskykh mostov ot korrozyy (Effective system of corrosion protection of metal bridges) / A.Y. Lykverman, F.B. Hlazman, K.O. Rasporov // Transportnoe stroytelstvo. 2001. №8. S. 2-5.
Marynyn A.N. Soprotyvlenye zhelezobetonnykh konstruktsyi vozdeistvyiu khlorydnoi korrozyy i karbonyzatsii (Resistance of reinforced concrete structures to chloride corrosion and carbonation)/ A.N. Marynyn, R.B. Harybov, Y.H. Ovchynnykov. Saratov: Yzdat. tsentr «RATA», 2008. 296 s.
Sakharov V.N. Sovremennye metody antykorrozyonnoi zashchyty metallokonstruktsyi v hydrotekhnyke (Modern methods of anti-corrosion protection of metal structures in hydraulic engineering)/ V.N. Sakharov, V.H. Maiorov // Hydrotekhnycheskoe stroytelstvo. 2005.№3. S. 46-11.
Serebrianykov Y.V. Antykorrozyonnaia zashchyta metallycheskykh konstruktsyi mostov (Anti-corrosion protection of metal structures of bridges) / Y.V. Serebriannykov, V.K. Matveev, V.V. Cherkasov // Put y putevoe khoziaistvo. 2008. №5. S.10-12.
Staroselskyi A.A. Korroziia i zashchita zhelezobetonnykh konstruktsyi i sooruzhenii elektrifitsirovannykh zheleznykh doroh: ucheb. Posobye (Corrosion and protection of reinforced concrete structures and structures of electrified railways: textbook. manual) / A.A. Staroselskyi. Kharkov: KhYYT, 1988. 82 s.
Shluher M.A. Korrozyia i zashchyta metallov (Corrosion and protection of metals) / M.A. Shluher, F.F. Azhohyn, E.A. Efymov. M.: Metallurhyia, 1981. 216 s.
ISO 12944-1988 (chasty 1-8) Mezhdunarodnyi standart. Laki i kraski. Zashchita ot korrozii stalnykh konstruktsii systemami zashchitnykh pokrytii (ISO 12944-1988 (parts 1-8) International standard. Paints and varnishes. Corrosion protection of steel structures by protective coating systems).
Mezenov V. Tough call for coating / V.Mezenov, M. Golovnenkova // Bridge: design and engineering. 2009. N55. V.15. 64 p.
Babik K.M., Hakh N.D., Shalinskyi V.V. Tekhnichnyi stan konstruktsii ta elementiv zemlianoi vstavky avtodorozhnoho pereizdu sporudamy Dniprovskoi HES (Technical condition of structures and elements of the earthen insert of the road crossing through the structures of the Dnieper HPP) //Promyslove budivnytstvo ta inzhenerni sporudy.- №4.-2020.-S.7-15
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