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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
SJR: 0.176 SNIP: 0.48 CiteScore™: 1.3

ISSN Печать: 1093-3611
ISSN Онлайн: 1940-4360

Выпуски:
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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.v17.i4.30
pages 221-226

MODIFICATION OF THE STRUCTURE AND PHASE COMPOSITION OF STRUCTURAL STEEL BY A MICROSECOND e-BEAM

Yurii F. Ivanov
Institute of High Current Electronics, Siberian Branch of the Russian Academy of Sciences (IHCE SB RAS), Tomsk, Russia; National Research Tomsk Polytechnic University, Tomsk, Russia
Yu. A. Kolubaeva
Institute of High-Current Electronics, Siberian Branch, Russian Academy of Sciences, 4 Akademicheskii Ave., Tomsk, 634055, Russia
Vladimir N. Devyatkov
Institute of High Current Electronics, Siberian Branch of the Russian Academy of Sciences, 2/3 Akademichesky Ave., Tomsk, 634055, Russia
Olga V. Krysina
Institute of High Current Electronics, Siberian Branch of the Russian Academy of Sciences, 2/3 Akademichesky Ave., Tomsk, 634055, Russia; Tomsk State University, Tomsk, Russia
Nikolay N. Koval
Institute of High Current Electronics, Siberian Branch of the Russian Academy of Sciences, 2/3 Akademichesky Ave., Tomsk, 634055, Russia; National Research Tomsk State University, 36 Lenin Ave., Tomsk, 634050, Russia
P. M. Schanin
Institute of High-Current Electronics, Siberian Branch, Russian Academy of Sciences, 4 Akademicheskii Ave., Tomsk, 634055, Russia

Краткое описание

The structure and phase composition of prehardened 38CrNi3MoVN steel subjected to an electron beam treatment have been studied by the metallographic, scanning, and transmission electron microscopy. The e-beam parameters are as follows: the energy of accelerated electrons U ~ 15 keV, the beam current I ~ 60 ?, the current pulse duration t ~ 30 µs, the pulse repetition rate f ~ 1 Hz, the beam diameter in the specimen surface plane D ~ 1.6 cm, and the beam energy density ES ~ 10 J/cm2. The e-beam treatment of the material has been shown to result in a gradient structure whose characteristic feature is a considerable (tenfold) decrease in the average size of martensite crystallites and laths with attended increase in the steel surface layer hardness by a factor of 2.5−3.

Ключевые слова: electron beam, surface modification, steel

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