STRUCTURAL-SCALE LEVELS OF FATIGUE DURABILITY INCREASE OF STEELS AND ALLOYS BY ELECTRON-BEAM TREATMENT
https://doi.org/10.17073/0368-0797-2015-5-346-351
Abstract
The electron-beam treatment of different classes of steels (Fe–
0.1C–18Cr–10Ni–1Ti, Fe–0.2C–23Cr–18Ni, Fe–0.2C–13Cr, Fe–
0.76C–1V) and silumin (Al – 12 % Si) with the parameters: electron
beam energy density 10 – 40 J/cm2, pulse duration 50 – 150 μs, pulse number 3 – 5, frequency 0.3 Hz) leads to the increase of cycle numbers up to the fracture in ~ 3.5 times. The studies of structure-phase states and defect substructure of these materials were carried out using the methods of scanning and transmission electron diffraction microscopy. It was shown that the increase in fatigue life of steel is due to the transformation of the structure of the surface layer of the material occurring during irradiation of samples high-intensity pulsed electron beam. It was suggested that the physical sense of the impact of multi-level structure-phase state on the mechanical properties of the surface layer of the material is in the redistribution of elastic energy as due to the interaction of the elastic fields of structural elements of different scale levels, and by reducing the scale level of plastic strain localization.
About the Authors
V. E. Gromov
Siberian State Industrial University 42, Kirova str., Kemerovo region, Novokuznetsk, 654007, Russia
Russian Federation
Russian Federation
Dr. Sci. (Phys.-math.), Professor, Head of the Chair of physics named after V.M. Finkel
S. V. Vorob’ev
Siberian State Industrial University 42, Kirova str., Kemerovo region, Novokuznetsk, 654007, Russia
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Candidates for a degree of Dr. Sci. (Eng.) the Chair of physics named after V.M. Finkel
V. V. Sizov
Siberian State Industrial University 42, Kirova str., Kemerovo region, Novokuznetsk, 654007, Russia
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Engineer of the Chair “Physics” named after V.M. Finkel
S. V. Konovalov
Siberian State Industrial University 42, Kirova str., Kemerovo region, Novokuznetsk, 654007, Russia
Russian Federation
Russian Federation
Dr. Sci. (Eng.), Assist. Professor, Professor of the Chair of physics named after V.M. Finkel
Yu. F. Ivanov
Institute of High Current Electronics SB RAS 2/3, Akademicheskii ave., Tomsk, 634055, Russia
National Research Tomsk State University 50, Lenina ave., Tomsk, 634050, Russia
Russian Federation
Russian Federation
Dr. Sci. (Phys.-math.), Professor, Chief Research Associate
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Review
For citations:
Gromov V.E., Vorob’ev S.V., Sizov V.V., Konovalov S.V., Ivanov Yu.F. STRUCTURAL-SCALE LEVELS OF FATIGUE DURABILITY INCREASE OF STEELS AND ALLOYS BY ELECTRON-BEAM TREATMENT. Izvestiya. Ferrous Metallurgy. 2015;58(5):346-351. (In Russ.) https://doi.org/10.17073/0368-0797-2015-5-346-351
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