STUDY OF CORROSION RATE AND FEATURES OF NANOCTRUCTURED ALUMINUM ALLOY SAMPLES IN HYDROGEN SULFIDE MEDIUM
https://doi.org/10.17073/0021-3438-2017-1-76-83
Abstract
The study determines corrosion rate and covers corrosion damage specifics of AK4-1 aluminum alloy samples in the NACE hydrogen sulfide solution. The alloy was studied in an ultrafine state as compared to the coarse-grained state obtained after standard T6 treatment (hardening + ageing). The alloy was nanostructured by equal-channel angular pressing (ECAP). It was shown that the alloy corrosion rate after ECAP was 1,9 times higher than after T6 treatment. Thus, general corrosion occurred in the alloy after ECAP, while in the T6 state pit corrosion occurred in the alloy in addition to general corrosion. The corrosive effect had a greater impact on surface roughness of samples made of AK4-1 alloy after ECAP as compared to samples after T6 treatment.
About the Authors
G. V. Klevtsov
Togliatti State University
Russian Federation
Russian Federation
Dr. Sci. (Tech.), prof., Department of nanotechnologies, materials science and mechanics (NMSM),
445667, Toglyatti, Belorusskaya str., 14
R. Z. Valiev
Ufa State Aviation Technology University
Russian Federation
Russian Federation
Dr. Sci. (Phys.-Math.), prof., head of Research Institute of Physics of Advanced Materials,
450063, Ufa, K. Marks str., 12
V. M. Kushnarenko
Orenburg State University
Russian Federation
Russian Federation
Dr. Sci. (Tech.)., prof., Department of mechanics,
460018, Orenburg, Pobedy pr., 13
N. A. Klevtsova
Togliatti State University
Russian Federation
Dr. Sci. (Tech.), prof., Department of NMSM
Russian Federation
Dr. Sci. (Tech.), prof., Department of NMSM
E. D. Merson
Togliatti State University
Russian Federation
postgraduate student, Department of NMSM
Russian Federation
postgraduate student, Department of NMSM
I. N. Pigaleva
Togliatti State University
Russian Federation
engineer, Department of NMSM
Russian Federation
engineer, Department of NMSM
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Review
For citations:
Klevtsov G.V., Valiev R.Z., Kushnarenko V.M., Klevtsova N.A., Merson E.D., Pigaleva I.N. STUDY OF CORROSION RATE AND FEATURES OF NANOCTRUCTURED ALUMINUM ALLOY SAMPLES IN HYDROGEN SULFIDE MEDIUM. Izvestiya. Non-Ferrous Metallurgy. 2017;(1):76-83. (In Russ.) https://doi.org/10.17073/0021-3438-2017-1-76-83
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