Features of accumulation of damages to aluminum-lithium alloys 1441 and V-1469 surface layers depending on corrosion environment and applied load

Grigorenko V.B., Morozova L.V., Zhegina I.P., Fomina M.A.
UDC
669:620.19
DOI
10.18577/2307-6046-2016-0-7-1-1
Article PDF (Russian) (1.24 MB)
How to cite
Grigorenko V.B., Morozova L.V., Zhegina I.P., Fomina M.A. Features of accumulation of damages to aluminum-lithium alloys 1441 and V-1469 surface layers depending on corrosion environment and applied load // Proceedings of VIAM. 2016. No. 7. DOI: 10.18577/2307-6046-2016-0-7-1-1. URL: https://test.viam.ru/en/journal/2016/7/1
Keywords
hard loading cycle, surface, damage accumulation, corrosive environment, slip lines, fragmentation, microstructure.
Abstract

By means of high-resolution methods of research including electron, laser and optical microscopy, the kinetics of glide lines accumulation process and corrosion damages of samples from aluminum-lithium alloys 1441 and V-1469 is studied at carrying out fatigue tests on rigid cycle in the conditions of combined influence of the corrosion environment and applied stress. The quantitative assessment of deformation parameters (density of slip band, sizes of plastic zones under break, surface roughness in the allocated zones) and damage parameters (the sizes and the area of corrosion pittings) is executed. The work is executed within the frames of the complex scientific direction 8.1. «High-strength welded aluminum and aluminum - lithium alloys of the lowered density with the increased fracture toughness» («The strategic directions of development of materials and technologies of their processing for the period till 2030»)

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