STRUCTURAL-PHASE STATE OF COATINGS OF THE SYSTEM OF Ni – Cr – B – Si – Fe/WC AFTER PLASMA-POWDER SURFACING WITH THE USAGE OF NANOPOWDERS
https://doi.org/10.17073/0368-0797-2016-4-245-250
Abstract
The paper presents the results of the comparative researches of structural-phase states and internal stress fields of plasma-powder surfaces of the system of Ni – Cr – B – Si – Fe/WC with the use of a modifier in the form of nanodisperse particles of Al2O3 and without it. Using the methods of transmission diffraction electron microscopy on thin foils, scanning electron microscopy, X-ray structure and electron probe X-ray analysis, the authors have conducted the researches of powder alloy PS-12NVK-01, welded on a substrate of steel 20. The phase composition has been defined, as well as defect structure and internal stresses. The material structure has been studied before and after the introduction of nanopowder Al2O3 into the melt. It has been established that the introduction of the modifier leads to the decrease of the material grain size, to the formation of tungsten carbide W2C and boride Fe3Ni3B in a carbide subsystem, as well as to the decrease of the internal stress values and dislocation scalar density .
About the Authors
A. N. Smirnov
Gorbachev Kuzbass State Technical University, Kemerovo, Russia
Russian Federation
Russian Federation
Dr. Sci. (Eng.), Professor of the Chair “Engineering Technology”
E. V. Kozlov
Tomsk State University of Architecture and Building (TSUAB), Tomsk, Russia
Russian Federation
Russian Federation
Dr. Sci. (Phys.-Math.), Professor, Head of the Chair of Physics
M. V. Radchenko
Polzunov Altai State Technical University, Barnaul, Russia
Russian Federation
Russian Federation
Dr. Sci. (Eng.), Professor, Head of the Chair of Small-scale Business in Welded Production named after Lenin-prize laureate V.G. Radchenko
K. V. Knyaz’kov
Institute of Coal of the Siberian Branch of the Russian Academy of Science, Kemerovo, Russia
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Engineer of the Laboratory of Coal Theoretical Engineering
V. L. Knyaz’kov
Gorbachev Kuzbass State Technical University, Kemerovo, Russia
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Assist. Professor of the Chair “Engineering Technology”
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Review
For citations:
Smirnov A.N., Kozlov E.V., Radchenko M.V., Knyaz’kov K.V., Knyaz’kov V.L. STRUCTURAL-PHASE STATE OF COATINGS OF THE SYSTEM OF Ni – Cr – B – Si – Fe/WC AFTER PLASMA-POWDER SURFACING WITH THE USAGE OF NANOPOWDERS. Izvestiya. Ferrous Metallurgy. 2016;59(4):245-250. (In Russ.) https://doi.org/10.17073/0368-0797-2016-4-245-250
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