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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 Druckformat: 1093-3611
ISSN Online: 1940-4360

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

DOI: 10.1615/HighTempMatProc.v8.i2.80
pages 233-243

STRUCTURE OF SURFACE LAYERS OF IRON AND CARBON STEELS TREATED BY COMPRESSION PLASMA FLOWS

Vladimir V. Uglov
Belarusian State University, 4 Nezavisimost Ave., Minsk, 220030, Belarus; National Research Tomsk Polytechnic University, 2a Lenin Ave., Tomsk, 634028, Russia
V. M. Anishchik
Belarussian State University, 4 Nezavisimost Ave., Minsk, 220030, Belarus
V. V. Astashynski
Research Laboratory, Department of Solid State Physics, Belarusian State University, 4 Nezavisimost Ave., Minsk, 220030, Belarus
Iryna N. Rumiantseva
Physical Technical Institute, National Academy of Sciences of Belarus, 10, Kuprevich St., Minsk, 220141, Belarus

ABSTRAKT

Investigation on a surface structure of carbon steel (0.025-0.8 wt.% C) modified by the action of compression plasma flows, and determination of element and phase composition were carried out using X-ray diffraction analysis, Auger-electron spectroscopy, optical microscopy and scanning electron microscopy, along with studies on mechanical properties of the material. As a result of plasma action, the cellular structure composed of polygonal cells and the modified layer by thickness of tens micrometers immediately adjacent to a sample surface are formed. Its phase structure represents a superposition of following phases: ferrite, martensite, austenite (C, N), and e nitride phase. Concentration of nitrogen in the surface layer reaches 15-20 atomic percents. The final structure of near-surface area in the processed samples is formed from ε-domain due to eutectoid decomposition on cooling.


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