MAGNETIC PULSE TREATMENT OF STEEL P6M5 STRUCTURE AND PROPERTIES

In this work, magnetic-pulse treatment (MPT) of a ring sample of P6M5 steel was carried out. The results of X-ray structural and X-ray phase analysis of the studied samples indicate that the main phase of the studied material before and after magnetic-pulse action is the α-phase of Fe. In the initial state, the concentration of carbon in the α-phase is 0,040 %. After magnetic-pulse treatment, the carbon concentration is 0,082 %, and thus a solid solution supersaturated with carbon is formed. During magnetic-pulse treatment, the size of the coherent scattering regions (CSR) of the α-phase decreases by 2,1 times and of the γ-phase by 1,5 times. In the α-phase, the value of microdistortions of the crystal lattice of the phases (Δd/d) increases by ten times, in the γ-phase it decreases by 1,6 times. During the study of the etched section using scanning electron microscopy methods, it was shown that the carbide inclusions have a globular shape and are located in the volume of the steel in a chaotic manner. Using micro-X-ray spectral analysis methods, it was established that, regardless of the location of analysis, these inclusions are enriched with atoms of tungsten, molybdenum and iron and may be carbides of complex composition of the Mе₆C type. 

1. Wu W., Chen W., Yang S., Lin Y., Zhang S., Cho T-Y., Lee G.H., Kwon S.-Ch. Design of AlCrSiN multilayers and nanocomposite coating for HSS cutting tools. Appl. Surf. Sci. 2015;351:803–810.

2. Cho I.S., Amanov A., Kim J.D. The effects of AlCrN coating, surface modification and their combination on the tribological properties of high speed steel under dry conditions. Tribol. Int. 2015;81:61–72.

3. Kottfer D., Ferdinandy M., Kaczmarek L., Maňková I., Beňo J. Investigation of Ti and Cr based PVD coatings deposited onto HSS Co 5 twist drills. Applied Surface Science. 2013;282:770–776. https://doi.org/10.1016/j.apsusc.2013.06.051

4. Gerth J., Wiklund U. The influence of metallic interlayers on the adhesion of PVD TiN coatings on high-speed steel. Wear. 2008;264:885–892. https://doi.org/10.1016/j.wear.2006.11.053

5. Chaus A.S., Rudnitskii F.I. Structure and Properties of Cast Rapidly Cooled High-Speed Steel R6M5. Metal Science and Heat Treatment. 2003;45:157–162. http://doi.org/10.1023/A:1025997100645

6. Kovalya N.N., Ivanova Yu.F. ed. Evolution of the structure of the surface layer of steel subjected to electron-ion-plasma treatment. Tomsk:NTL. 2016:298. (In Russ.).

7. Koval' N.N. Ivanov Yu.F. . Nanostructuring of the surface of metal-ceramic and ceramic materials using pulsed electron-beam processing Izvestiya vuzov. Fizika. 2008;51(5):60–70. (In Russ.). EDN: IXVYKN.

8. Chapaikin A.S., Gromov V.E., Chzhan P., Ivanov Yu.F., Kryukov R.E., Shlya-rov V.V., Semin A.P. Structural-phase states and properties of plasma surfacing of high-speed steel in a nitrogen environment. Vestnik Sibirskogo gosudarstvennogo industrial'nogo universiteta. 2024;1(47):35–47. (In Russ.). http://doi.org/10.57070/2304-4497-2024-1(47)-35-47

9. Volodin V.A., Sarychev V.D., Gudimova L.N., Yanitskii I.E. The influence of pulsed magnetic fields on the structure and properties of metal alloys. Izvestiya vuzov. Chernaya metallurgiya. 1990;10:77–79. (In Russ.),

10. Volodin V.L., Khasanov O.L., Volodin T.V., Gromov V.E., Konovalov S.V. Formation of structural-phase states of metal alloys during magnetic-pulse treatment. Novokuznetsk: Izd-vo «Inter-Kuzbass», 2011:221. (In Russ.).

11. Volodin V.L., Kon'kov Yu.D., Gaiduk V.V., Volodin T.V., Sarychev V.D. Resistance to fatigue failure of bimetals after pulsed treatment with electric currents in an alternating magnetic field. Steel in Translation. 2002;32(2):68–74.

12. Gagarin A.Yu., Sarychev V.D., Cheremushkina E.V., Granovskii A.Yu., Gromov V.E. Pulsed magnetic field for creating high temperature fields on the surface of metals. Vestnik Tam-bovskogo universiteta. Seriya: Estestvennye i tekhnicheskie nauki. 2016;21(3):926–929. (In Russ.).

13. Alifanov A.V., Tsionenko D. A., Milyukova A. M. Physics of the process of magnetic pulse hardening of steel products, calculation of inductors and process parameters. In.: Advanced materials and technologies. Vitebsk: VGTU. 2017:31–52. (In Russ.).

14. Kostyk K., Kuric I., Saga M., Kostyk V., Ivanov V., Kovalov V., Pavlenko I. Impact of Magnetic- Pulse and Chemical-Thermal Treatment on Alloyed Steels’ Surface Layer. Applied Sciences. 2022;12(1):469.

15. https://doi.org/10.3390/app12010469

16. Stolyarov V., Misochenko A.A Pulsed Current Application to the Deformation Processing of Materials. Materials. 2023;16(18):6270.

17. https://doi.org/10.3390/ma16186270

18. Fasiska E.J., Wagenblat H. Dilatation of alpha-iron by carbon. Trans. Met. Soc. AIME. 1967;239(11):1818–1820.

19. Kurdyumov V.G., Utevskii L.M., Entin R.I. Transformations in iron and steel. Moscow: Nauka. 1977:236. (In Russ.).

20. Ridley N., Stuart H., Zwell L. Lattice parameter of Fe‒C austenite of room temperature. Trans. Met. Soc. AIME. 1969;246(8):1834–1836.

21. Ivanov Yu.F., Gromov V.E., Popova N.N., Konovalov S.V., Koneva N.A. Structural-phase states and strengthening mechanisms of deformed steel. Novokuznetsk: Poligrafist. 2016:510. (In Russ.). EDN: ZQOUNB.

22. Koneva N.A., Kiseleva S.F., Popova N.A. Evolution of structure and internal stress fields. Saarbrucken: LAP Lambert Academic Publishing RU. 2017:148. (In Russ.).

23. Popova N.A., Gromov V.E., Porfir'ev M.A., Ivanov Yu.F., Nikonenko E.L., Nevskii S.A. Mechanisms for strengthening heavily loaded hypereutectoid steel rails during long-term operation. Voprosy materialovedeniya. 2024;1(117):20–39. (In Russ.).