A mechanism of microcrater formation in metallic material irradiated by a low-energy high-current electron beam
- Authors: Ozur G.E.1, Proskurovsky D.I.1, Rotshtein V.P.2
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Affiliations:
- Institute of High-Current Electronics, Siberian Branch
- Tomsk State Pedagogical University
- Issue: Vol 42, No 3 (2016)
- Pages: 328-331
- Section: Article
- URL: https://journals.rcsi.science/1063-7850/article/view/198331
- DOI: https://doi.org/10.1134/S1063785016030275
- ID: 198331
Cite item
Abstract
Experiments with stainless steel (304L grade) samples exposed to microsecond pulses of high-current low-energy (10–30 keV) electron beam have been performed to determine dependences of the morphology, average diameter, and density of irradiation-induced microcraters on the beam energy density. A mechanism is proposed, according to which the crater formation is caused by radial spreading of the melt from the site of localization of a MnS inclusion under the action of the surface tension gradient caused by overheating of the inclusion. Estimations of the dimensions of microcraters are in satisfactory agreement with experimental data.
About the authors
G. E. Ozur
Institute of High-Current Electronics, Siberian Branch
Author for correspondence.
Email: ozur@Lve.hcei.tsc.ru
Russian Federation, Tomsk, 634055
D. I. Proskurovsky
Institute of High-Current Electronics, Siberian Branch
Email: ozur@Lve.hcei.tsc.ru
Russian Federation, Tomsk, 634055
V. P. Rotshtein
Tomsk State Pedagogical University
Email: ozur@Lve.hcei.tsc.ru
Russian Federation, Tomsk, 634061