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

ISSN Print: 1093-3611
ISSN Online: 1940-4360

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

DOI: 10.1615/HighTempMatProc.2018025843
pages 333-343

COMBINED PLASMA AND THERMAL TREATMENT OF THE NbC/AISI T1 STEEL SYSTEM

Nikolai N. Cherenda
Belarusian State University, 4 Nezavisimost Ave., Minsk, 220030, Belarus; South-Urals State University, 76 Lenin Ave., Chelyabinsk, 454080, Russia
Vladimir V. Uglov
Belarusian State University, 4 Nezavisimost Ave., Minsk, 220030, Belarus; National Research Tomsk Polytechnic University, 2a Lenin Ave., Tomsk, 634028, Russia
A. M. Kashevski
Belarusian State University, 4 Nezavisimost Ave., Minsk, 220030, Belarus
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
A. M. Kuzmitski
A. V. Luikov Heat and Mass Transfer Institute, National Academy of Sciences of Belarus, 15, P. Brovki Str, Minsk 220072, Belarus
Gennadii E. Remnev
National Research Tomsk Polytechnic University, 2a Lenin Ave., Tomsk, 634028, Russia

ABSTRACT

Combined plasma and thermal treatment of the NbC/AISI T1 steel system was carried out to improve the strength characteristics of T1 steel. The X-ray diffraction analysis, scanning electron microscopy, energy dispersion microanalysis, and microhardness measurements were used for investigation of the modified layer structure and properties. The findings showed that the treatment of the NbC/T1 steel system by compression plasma flows generated in nitrogen atmosphere led to the dissolution of carbides, formation of ε-NbN nitride, and to a decrease in the steel microhardness. Subsequent annealing in air of a plasma-treated sample for 9 h at a temperature of 600°C resulted in a 1.3 times increase of microhardness compared to the initial steel sample.


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