STRUCTURAL STRENGTH AND CORROSION RESISTANCE OF NANOSTRUCTURED STEEL 10
https://doi.org/10.17073/0368-0797-2014-6-66-70
Abstract
The paper presents research results obtained for ultrafi ne-grained (UFG) steel 10 by equal-channel angular pressing (ECAP) at 200 °C. A complex analysis of structural strength, including static tensile testing and analysis of impact strength and crack resistance, was conducted on the produced samples. It is shown that the strength of steel 10 grows 2.5 times after ECAP. ECAP via the set regime practically does not change the threshold of cold brittleness of steel 10, but narrows the range of ductile-brittle transition. The calculation of crack resistance showed that Kth of steel 10 with the UFG structure does not decrease as compared to the initial state, but even increases slightly. The analysis of corrosion resistance of the steel shows that the corrosion rate of uncoated samples of steel after 10 ECAP somewhat higher compared with the initial state. However, the corrosion rate of the steel after ECAP coated with about 2 times lower compared with the steel in the initial state with the coating. The paper discusses the nature of the observed patterns.
About the Authors
R. Z. Valiev
Ufa State Aviation Technical University (Ufa, Republic of Bash-kortostan, Russia)
St. Petersburg State University (St. Petersburg, Russia)
Russian Federation
Russian Federation
Doctor of Phys.-math. Sciences, Professor, Director of the Institute Physics of Advanced Materials
G. V. Klevtsov
Toliatti State University (Toliatti, Samara Region, Russia)
Russian Federation
Russian Federation
Dr. Eng., Professor of the Department of Nanotechnology, Materials and Mechanics
N. A. Klevtsova
Orenburg State University (Orenburg, Orenburg Region, Russia)
Russian Federation
Russian Federation
Dr. Eng., Assist. Professor Department of Radiophysics electronics
V. M. Kushnarenko
Orenburg State University (Orenburg, Orenburg Region, Russia)
Russian Federation
Dr. Eng., Professor Head of the Department of machine parts and Industrial Mechanics
Russian Federation
Dr. Eng., Professor Head of the Department of machine parts and Industrial Mechanics
A. V. Ganeev
Ufa State Aviation Technical University (Ufa, Republic of Bash-kortostan, Russia)
Russian Federation
Russian Federation
engineer of the Institute Physics of Advanced Materials
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Review
For citations:
Valiev R.Z., Klevtsov G.V., Klevtsova N.A., Kushnarenko V.M., Ganeev A.V. STRUCTURAL STRENGTH AND CORROSION RESISTANCE OF NANOSTRUCTURED STEEL 10. Izvestiya. Ferrous Metallurgy. 2014;57(6):66-70. (In Russ.) https://doi.org/10.17073/0368-0797-2014-6-66-70
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