The influence of nitrogen content on the amount of austenite in the structure of the deposited coatings obtained from diffusionsgleichung shavings of steel Р6M5
https://doi.org/10.21122/1683-6065-2019-1-108-111
Abstract
The article presents the results on the structure formation of deposited coatings obtained from steel chips P6M5 subjected to diffusion nitrogen-carbon doping. It was found that the diffusion doping with nitrogen-carbon steel chip waste P6M5 carbon content in them varies between 1.75–3.14%, nitrogen – 0.43–1.24%. The phase composition includes phases: a-Fe, M6C, Fe3C, (Cr, Fe)2N1–x, Fe3N, Cr0.63C0.35N0.03, M4(C, N) depending on the temperature and time of diffusion doping. When surfacing these materials in the deposited coating contains carbide-forming elements 8,6–9,3%, carbon 1,04–1,94%, nitrogen 0,08–0,25%. The structure consists of carbide M23S6, martensite and austenite, while the content of austenite in dendrites can reach 70–90%. It is shown that nitrogen doping of the deposited coatings obtained from steel chips P6M5, subjected to saturation with nitrogen-carbon, more effectively increases the amount of austenite in the structure than alloying the deposited coatings with nitrogen ferroalloys.
About the Authors
V. A. Stefanovich
Belarusian National Technical University
Belarus
Minsk, Belarus, 65, Nezavisimosti аve.
Belarus
Minsk, Belarus, 65, Nezavisimosti аve.
S. V. Borisov
Belarusian National Technical University
Belarus
Minsk, Belarus, 65, Nezavisimosti аve.
Belarus
Minsk, Belarus, 65, Nezavisimosti аve.
A. V. Stefanovich
Belarusian National Technical University
Belarus
Minsk, Belarus, 65, Nezavisimosti аve.
Belarus
Minsk, Belarus, 65, Nezavisimosti аve.
References
1. Livshic L. S. Naplavochnye materialy i tehnologija naplavki dlja povyshenija iznosostojkosti i vosstanovlenija detalej mashin [Surfacing materials and technology of surfacing to increase wear resistance and restoration of machine parts]. Svarochnoe proizvodstvo = Welding production, 1990, no. 1, pp.15–17.
2. Mamaev P. N., Grinberg N. A., Livshic L. S. Iznosostojkie naplavki s azotom [Wear-resistant surfacing with nitrogen]. Metallovedenie i termicheskaja obrabotka metallov = Metal science and heat treatment of metals, 1972, no. 6, pp. 54–55.
3. Molekuljarnye postojannye neorganicheskih soedinenij [Molecular permanent inorganic compounds]. Leningrad, Himija Publ., 1979. 446 p.
Review
For citations:
Stefanovich V.A., Borisov S.V., Stefanovich A.V. The influence of nitrogen content on the amount of austenite in the structure of the deposited coatings obtained from diffusionsgleichung shavings of steel Р6M5. Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY). 2019;(1):108-111. (In Russ.) https://doi.org/10.21122/1683-6065-2019-1-108-111
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