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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
SJR: 0.137 SNIP: 0.341 CiteScore™: 0.43

ISSN Imprimer: 1093-3611
ISSN En ligne: 1940-4360

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

DOI: 10.1615/HighTempMatProc.2014011948
pages 297-313

AUSTENITIC STEEL SURFACE ALLOYED WITH ZIRCONIUM USING COMPRESSION PLASMA FLOW

A. H. Sari
B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 70 Nezavisimosti Ave., Minsk 220072, Belarus; Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran, Iran
Valiantsin M. Astashynski
A.V. Luikov Heat and Mass Transfer Institute, National Academy of Sciences of Belarus, 15 P. Brovka Str., Minsk, 220072, Belarus; National Research Nuclear University "MEPhI" (Moscow Engineering Physics Institute), 31 Kashirskoe Highway, Moscow, 115409, Russia
E. A. Kostyukevich
A. V. Luikov Heat and Mass Transfer Institute, National Academy of Sciences of Belarus, 15, P. Brovki Str, Minsk 220072, Belarus
A. M. Kuzmitski
A. V. Luikov Heat and Mass Transfer Institute, National Academy of Sciences of Belarus, 15, P. Brovki Str, Minsk 220072, Belarus
Vladimir V. Uglov
Belarusian State University, 4 Nezavisimost Ave., Minsk, 220030, Belarus; National Research Tomsk Polytechnic University, 2a Lenin Ave., Tomsk, 634028, Russia
Nikolai N. Cherenda
Belarusian State University, 4 Nezavisimost Ave., Minsk, 220030, Belarus; South-Urals State University, 76 Lenin Ave., Chelyabinsk, 454080, Russia
Yu. A. Petukhou
Belarusian State University of Informatics and Radioelectronics, 6, P. Brovki St., Minsk 220013, Belarus

RÉSUMÉ

In this study, the effect of a nitrogen compression plasma flow on the microstructural, mechanical, and tribological properties, as well as the elemental and phase compositions of a Zr/austenitic steel system, has been investigated. The Zr/steel system was exposed to a single pulse of the compression plasma flow or to a series of pulses of different energies. The plasma pulse duration and discharge current were 100 µs and 80 kA, respectively. The samples were characterized by scanning electron microscopy, X-ray diffraction, energy dispersive X-ray analyses, and subjected to Vickers microhardness and friction tests. The findings showed the formation of a surface modified layer alloyed by Zr depending on the absorbed energy value was about 12−20 µm. An increase in both the number of pulses and absorbed energy density provides a more uniform zirconium distribution in the modified layer. The surface microhardness and wear resistance of the treated samples increased by factors of 1.6 and 5.4, respectively. The modified layer contains α- and γ-iron-based solid solutions, the Fe23Zr6 intermetallic compound, and ZrN and Cr2N nitrides due to nitrogen diffusion.


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