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Pisma v Zhurnal Tekhnicheskoi Fiziki, 2016, Volume 42, Issue 6, Pages 97–103
(Mi pjtf6480)
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This article is cited in 15 scientific papers (total in 15 papers)
A mechanism of microcrater formation in metallic material irradiated by a low-energy high-current electron beam
G. E. Ozura, D. I. Proskurovskiia, V. P. Rotshteinb a Institute of High Current Electronics, Siberian Branch of the Russian Academy of Sciences, Tomsk
b Tomsk State Pedagogical University
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.
Keywords:
Technical Physic Letter, 304L Steel, Radial Spreading, Surface Tension Gradient, Manganese Sulfide.
Received: 01.11.2015
Citation:
G. E. Ozur, D. I. Proskurovskii, V. P. Rotshtein, “A mechanism of microcrater formation in metallic material irradiated by a low-energy high-current electron beam”, Pisma v Zhurnal Tekhnicheskoi Fiziki, 42:6 (2016), 97–103; Tech. Phys. Lett., 42:3 (2016), 328–331
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https://www.mathnet.ru/eng/pjtf6480 https://www.mathnet.ru/eng/pjtf/v42/i6/p97
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