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- ON THE 145TH ANNIVERSARY OF TSNIIPSK named after MELNIKOV
- Impact Strength In The Steel Quality Certification System In The Design Of Building Structures
- UDC 669.14.018
doi: 10.33622/0869-7019.2025.11.04-11
Vitaliy M. GORITSKIY, goritskiyvit@bk.ru
Georgiy R. SHNEYDEROV, oem@stako.ru
Maria O. KUDRYASHOVA, m.kudryashova@stako.ru
Melnikov Central Research and Design Institute of Steel Structures, ul. Krzhizhanovskogo, 21/23, korp. 1, Moscow 117218, Russian Federation
Abstract. It is considered how amendment No. 2 in the regulatory document on steel structures affects the practice of choosing and using structural welded steels for construction. Using the example of quality certification of steels of various strength classes, the effect of changing the cutting direction of Sharpie impact samples on the resistance to brittle fracture of steels manufactured using controlled rolling and thermomechanical processing technology is studied. It is shown that in high-strength steels microalloyed with the titanium, niobium, and vanadium system, the coefficient of impact strength anisotropy, determined by the ratio of impact strength along the rolled product to impact strength across the rolled product, depends on the content of titanium, aluminum, carbon, and sulfur. The influence of the degree of impact strength anisotropy on the embrittlement of transverse steel samples compared with longitudinal samples has been studied. It is noted that the introduction of this change made it possible to expand the groups of structures (temporary structures). For the first time, impact strength requirements have been established for these structures on Sharpie samples at test temperatures -20, -30 and -40 °C. It is shown that on this basis it is possible to use pipes of reconditioned reuse that meet the requirements of the standard for steel structures.
Keywords: structural weldable steel, impact toughness, critical brittleness temperature, impact strength anisotropy coefficient, microalloyed steels, controlled rolling, thermomechanical treatment - REFERENCES
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