High strength corrosion resistant steel VNS-74 as applied to aircraft fasteners

Tonysheva О.А., Voznesenskaya N.M., Gromov V.I., Leonov A.V.
UDC
669.14.018.8
DOI
10.18577/2307-6046-2022-0-7-3-12
Article PDF (Russian) (741.24 KB)
How to cite
Tonysheva О.А., Voznesenskaya N.M., Gromov V.I., Leonov A.V. High strength corrosion resistant steel VNS-74 as applied to aircraft fasteners // Proceedings of VIAM. 2022. No. 7. DOI: 10.18577/2307-6046-2022-0-7-3-12. URL: https://test.viam.ru/en/journal/2022/7/1
Keywords
corrosion resistant steel, heat treatment, mechanical properties, fasteners
Abstract

The article is devoted to the development of technology for smelting and deformation of VNS-74 (05Kh16N5AB) corrosion resistant steel with an increased nitrogen content (more than 0.10 % by weight). The structure and its influence on the hardness and strength characteristics of calibrated bars (different sections from 6 to 16 mm), made of steel VNS-74 by cold and hot deformation, are considered. The high technological plasticity of thin rods in the cold state, which is necessary for carrying out the operation of cold upsetting of the bolt heads, is shown. The mechanical properties and stress corrosion resistance of cold and hot heading bolts with 8° misalignment under the head and under the screw-nut and without misalignment were studied.

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