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On the fatigue strength of grade 20Cr13 hardened steel modified by an electron beam |
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| Authors: | Yu. F. Ivanov D. A. Bessonov S. V. Vorob’ev V. E. Gromov K. V. Ivanov Yu. A. Kolubaeva V. Ya. Tsellermaer |
| Affiliation: | 1. High Current Electronics Institute, Siberian Branch, Russian Academy of Sciences, Akademicheskii pr. 4, Tomsk, 634055, Russia 2. Siberian State Industrial University, ul. Kirova 42, Novokuznetsk, 654007, Russia 3. Institute of Strength Physics and Materials Science, Siberian Branch, Russian Academy of Sciences, Akademicheskii pr. 2/1, Tomsk, 634021, Russia |
| Abstract: | The treatment of 20Cr13-grade hardened steel (0.2% C, 13% Cr) with an electron beam whose energy density is 10–30 J/cm2 results in an increase in the fatigue life by a factor of 1.9. The irradiated surface is investigated by scanning electron microscopy; substantial refinement of the grain structure and a change in the Cr content in the surface layer are revealed. |
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