INCREASE OF FATIGUE LIFE OF STEELS OF DIFFERENT STRUCTURE CLASSES BY ELECTRON BEAM TREATMENT
https://doi.org/10.17073/0368-0797-2016-4-261-263
Abstract
The methods of modern materials science to quantitative changes in structural and phase states and dislocation substructure of steels of different structural classes (08Cr18Ni10Ti, 20Cr13, 20Cr23Ni18, E76F), under graver-electron-beam processing, the energy density 10 – 40 J/cm2 have been established. The gradient type has revealed the nature of changes in structural and phase states in steels after electronbeam processing, destroyed during high-cycle fatigue. The authors have identified and analyzed the main factors and mechanisms that determine the fatigue life of steels after electron-beam processing up to 3.5 times. The article presents the results of the change in the structural-phase states and faulty substructure of the steel due to grinding grain and subgrain structure (for 20Cr13 and 20Cr23Ni18 steels), suppression of the processes leading to the formation of zones, potential for microcracks formation (for 20Cr13 steel), the formation of needle-profile interface leading to a more homogeneous plastic flow in the substrate (for E76F steel).
Keywords
About the Author
S. V. Vorob’ev
Siberian State Industrial University, Novokuznetsk, Russia
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Assist. Professor, Candidates for a degree of Dr. Sci. (Eng.) of the Chair of Physics named after V.M. Finkel
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Review
For citations:
Vorob’ev S.V. INCREASE OF FATIGUE LIFE OF STEELS OF DIFFERENT STRUCTURE CLASSES BY ELECTRON BEAM TREATMENT. Izvestiya. Ferrous Metallurgy. 2016;59(4):261-263. (In Russ.) https://doi.org/10.17073/0368-0797-2016-4-261-263
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