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ISSN Druckformat: 1093-3611
ISSN Online: 1940-4360
Indexed in
MODIFICATION OF THE STRUCTURE AND PHASE COMPOSITION OF STRUCTURAL STEEL BY A MICROSECOND e-BEAM
ABSTRAKT
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.
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Aborkin A. V., Vaganov V. E., Klimov N. S., Kovalenko D. V., Sobol’kov A. V., Treatment with a High-Temperature Pulsed Plasma and Laser Radiation for Die Steel Surface Layer Hardening, Metallurgist, 60, 7-8, 2016. Crossref
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Devyatkov V.N., Ivanov Yu. F., Krysina O.V., Koval N.N., Petrikova E.A., Shugurov V.V., Equipment and processes of vacuum electron-ion plasma surface engineering, Vacuum, 143, 2017. Crossref