Obrabotka metallov

OBRABOTKA METALLOV

METAL WORKING AND MATERIAL SCIENCE
Print ISSN: 1994-6309    Online ISSN: 2541-819X
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Recent issue
Vol. 27, No 3 July – September 2025

Study of Fe-matrix composites with carbide strengthening, formed by sintering of iron titanides and carbon mechanically activated mixtures

Vol. 26, No 2 April - June 2024
Authors:

Pribytkov Gennady,
Baranovskiy Anton,
Firsina Irina,
Akimov Kirill,
Krivopalov Vladimir
DOI: http://dx.doi.org/10.17212/1994-6309-2024-26.2-212-223
Abstract

Introduction. The addition of dispersed solid particles of refractory compounds (carbides, borides, silicides) to the structure of alloy is a widely used effective way to increase the wear resistance of steels and alloys. Composites with a matrix of iron-based alloys (steel and cast iron) strengthened by titanium carbide particles are of great practical interest. The main structural characteristics, which define hardness and wear resistance of the composites, are volume fraction, dispersion and morphology of the particles of the strengthening carbide phase. The structure of composites depends on the method of its preparation. The methods of powder metallurgy combined with preliminary mechanical activation of powder mixtures have become widespread. It is previously established that in mechanically activated powder mixtures of FTi35S5 ferrotitanium, consisting of 82 % of (Fe,Al)2Ti phase, and P-803 carbon black, a reaction occurs with the formation of a composite consisting of a steel binder and titanium carbide. The synthesis reaction of carbides occurs in a solid-phase mode at combustion’s temperatures of 900–950 °C. Therefore, there is no coarsening of the structure due to the growth of carbide particles, which is typical for reactions in the presence of a liquid phase. FTi35S5 alloy contains a plenty of impurities (silicon, aluminum and etc). The purpose of the work is to investigate the phase composition and structure of the products of the interaction of Fe2Ti and FeTi iron titanides with carbon under the conditions of reaction sintering of mechanically activated powder mixtures and to determine the possibility of synthesizing iron-matrix composites strengthened with submicron titanium carbide particles. Research methods. The structure and phase composition of sintered compacts from mechanically activated powders were studied by optical metallography, X-ray diffraction (XRD) and scanning electron microscopy (SEM) using determination of the elemental composition by energy-dispersive X-ray spectroscopy (EDX). Experimental technique. The reaction mixtures were prepared using intermetallic powders obtained by vacuum sintering of compacts from iron and titanium powder mixtures of 2Fe+Ti and Fe+Ti compositions. Carbon black was added to the intermetallic powders to convert all the titanium containing in the intermetallic compounds into carbide. The titanides – carbon black mixtures were processed by an Activator 2S planetary ball mill for 10 min milling time at a rotation speed of 755 rpm (40g). The mechanically activated mixtures were cold compacted into cylindrical samples with a diameter of 20 mm, which were sintered in vacuum at а temperature of 1,200 °C and an isothermal holding time of 60 minutes. Results and discussion. According to the results of X-ray diffraction analysis, almost all titanium contained in iron titanides reacts with carbon to form carbide and reduced iron. The sintering products of compacts of both compositions contain target phases: titanium carbide with a slight shift from the equiatomic ratio and α-iron, which has the lattice parameters close to the reference data, and also a few of other phases. The titanium carbide particles in the iron binder were identified on the back-scattered electron (BSE) images due to the tonal contrast: the heavy iron appears darker against the carbide, which is composed of lighter elements. According to EDX analysis, the relative content of titanium and carbon in the carbide particles indeed corresponds to the composition of non-stoichiometric titanium carbide. Conclusion. The composites including titanium carbide and α-iron binder were obtained by sintering of iron titanides and carbon (carbon black) mechanically activated powder mixtures. The granules of composite powders obtained by crushing of sintered compacts are of interest as feedstocks for wear-resistant coatings and additive technologies, as well as for manufacturing of dense materials by other compaction methods: spark plasma sintering (SPS) or hot pressing (HP).


Keywords: Iron titanides, Carbon (carbon black), Powder mixtures, Mechanical activation, Sintering, Iron matrix composites, Titanium carbide, Phase composition

References

1. Parashivamurthy K.I., Kumar R.K., Seetharamu S., Chandrasekharaiah M.N. Review on TiC reinforced steel composites. Journal of Materials Science, 2001, vol. 36 (18), pp. 4519–4530. DOI: 10.1023/A:1017947206490.



2. Parashivamurthy K.I., Sampathkumaran P., Seetharamu S. Wear behavior of Fe–TiC composites. International Conference on Advances in Manufacturing Engineering – 2007, ICAME-2007, Manipal Institute of Technology, Manipal, Karnataka, India, 2007, pp. 73–78.



3. Srivastava A.K., Das K. The abrasive wear resistance of TiC and (Ti,W)C-reinforced Fe–17Mn austenitic steel matrix composites. Tribology International, 2010, vol. 43 (5–6), pp. 944–950. DOI: 10.1016/J.TRIBOINT.2009.12.057.



4. Olejnik E., Szymanski L., Batóg P., Tokarski T., Kurtyka P. TiC–FeCr local composite reinforcements obtained in situ in steel casting. Journal of Materials Processing Technology, 2020, vol. 275, p. 116157. DOI: 10.1016/j.jmatprotec.2019.03.017.



5. Hu S.W., Zhao Y.G., Wang Z., Li Y.G., Jiang Q.C. Fabrication of in situ TiC locally reinforced manganese steel matrix composite via combustion synthesis during casting. Materials and Design, 2013, vol. 44, pp. 340–345. DOI: 10.1016/j.matdes.2012.07.063.



6. He S., Fan X., Chang Q., Xiao L. TiC–Fe-based composite coating prepared by self-propagating high-temperature synthesis. Metallurgical and Materials Transactions B, 2017, vol. 48 (3), pp. 1748–1753. DOI: 10.1007/s11663-017-0942-8.



7. Zheng Y., Zhou Y., Feng Y., Teng X., Yan S., Li R., Yu W., Huang Z., Li S., Li Z. Synthesis and mechanical properties of TiC–Fe interpenetrating phase composites fabricated by infiltration process. Ceramics International, 2018, vol. 44 (17), pp. 21742–21749. DOI: 10.1016/j.ceramint.2018.08.268.



8. Lin T., Guo Y., Wang Z., Shao H., Lu H., Li F., He X. Effects of chromium and carbon content on microstructure and properties of TiC-steel composites. International Journal of Refractory Metals and Hard Materials, 2018, vol. 72, pp. 228–235. DOI: 10.1016/j.ijrmhm.2017.12.037.



9. Persson P., Jarfors A.E.W., Savage S. Self-propagating high-temperature synthesis and liquid-phase sintering of TiC/Fe composites. Journal of Materials Processing Technology, 2002, vol. 127 (2), pp. 131–139. DOI: 10.1016/S0924-0136(02)00113-9.



10. Akhtar F., Guo S.J. Microstructure, mechanical and fretting wear properties of TiC-stainless steel composites. Materials Characterization, 2008, vol. 59 (1), pp. 84–90. DOI: 10.1016/j.matchar.2006.10.021.



11. Akhtar F., Guo S. On the processing, microstructure, mechanical and wear properties of cermet/stainless steel layer composites. Acta Materialia, 2007, vol. 55 (4), pp. 1467–1477. DOI: 10.1016/j.actamat.2006.10.009.



12. Zhu H., Dong K., Wang H., Huang J., Li J., Xie Z. Reaction mechanisms of the TiC/Fe composite fabricated by exothermic dispersion from Fe–Ti–C element system. Powder Technology, 2013, vol. 246, pp. 456–461. DOI: 10.1016/J.POWTEC.2013.06.002.



13. Wang J., Wang Y., Ding Y. Reaction synthesis of Fe–(Ti,V)C composites. Journal of Materials Processing Technology, 2008, vol. 197 (1–3), pp. 54–58. DOI: 10.1016/j.jmatprotec.2007.06.016.



14. Jing W., Yisan W., Yichao D. Production of (Ti,V)C reinforced Fe matrix composites. Materials Science and Engineering: A, 2007, vol. 454–455, pp. 75–79. DOI: 10.1016/j.msea.2006.11.024.



15. Lee J., Lee D., Song M.H., Rhee W., Ryu H.J., Hong S.H. In-situ synthesis of TiC/Fe alloy composites with high strength and hardness by reactive sintering. Journal of Materials Science and Technology, 2018, vol. 34 (8), pp. 1397–1404. DOI: 10.1016/j.jmst.2017.03.006.



16. Chen X., Zhain H., Wang W., Li S., Huang Z. A TiCx reinforced Fe(Al) matrix composite using in-situ reaction. Progress in Natural Science: Materials International, 2013, vol. 23 (1), pp. 13–17. DOI: 10.1016/j.pnsc.2013.01.002.



17. Li B., Liu Y., Cao H., He L., Li J. Rapid fabrication of in situ TiC particulates reinforced Fe-based composites by spark plasma sintering. Materials Letters, 2009, vol. 63 (23), pp. 2010–2012. DOI: 10.1016/j.matlet.2009.06.026.



18. Yim D., Sathiyamoorthi P., Hong S.-J., Kim H.S. Fabrication and mechanical properties of TiC reinforced CoCrFeMnNi high-entropy alloy composite by water atomization and spark plasma sintering. Journal of Alloys and Compounds, 2019, vol. 781, pp. 389–396. DOI: 10.1016/j.jallcom.2018.12.119 0925-8388.



19. Fu Z.Y., Wang H., Wang W.M., Yuan R.Z. Composites fabricated by self-propagating high-temperature synthesis. Journal of Materials Processing Technology, 2003, vol. 137 (1–3), pp. 30–34. DOI: 10.1016/s0924-0136(02)01061-0.



20. Fadin V.V., Kolubaev A.V., Aleutdinova M.I. Kompozity na osnove karbida titana, poluchennogo metodom tekhnologicheskogo goreniya [Carbide titanium based composites, obtained by combustion process]. Perspektivnye materialy = Journal of Advanced Materials, 2011, no. 4, pp. 91–96. (In Russian).



21. Telepa V.T., Shcherbakov V.A., Shcherbakov A.V. TiC–30 wt % Fe composite by pressure-assisted electrothermal explosion. Letters on materials, 2016, vol. 6 (4), pp. 286–289. DOI: 10.22226/2410-3535-2016-4-286-289. (In Russian).



22. Zhang M.X., Hu Q.D., Huang B., Li J.Z., Li J.G. Study of formation behavior of TiC in the Fe–Ti–C system during combustion synthesis. International Journal of Refractory Metals and Hard Materials, 2011, vol. 29 (3), pp. 356–360. DOI: 10.1016/j.ijrmhm.2011.01.001.



23. Zhang M.X., Hu Q.D., Huo Y.Q., Huang B., Li J.G. Formation and growth mechanism of TiC terraces during self-propagating high-temperature synthesis from a Fe–Ti–C system. Journal of Crystal Growth, 2012, vol. 355 (1), pp. 140–144. DOI: 10.1016/j.jcrysgro.2012.06.045.



24. Rahimi-Vahedi A., Adeli M., Saghafian H. Formation of Fe–TiC composite clad layers on steel using the combustion synthesis process. Surface and Coatings Technology, 2018, vol. 347, pp. 217–224. DOI: 10.1016/j.surfcoat.2018.04.086.



25. Saidi A., Chrysanthou A., Wood J.V., Kellie J.L.F. Characteristics of the combustion synthesis of TiC and Fe–TiC composites. Journal Materials Science, 1994, vol. 29 (19), pp. 4993–4998. DOI: 10.1007/BF01151089.



26. Saidi A., Chrysanthou A., Wood J.V., Kellie J.L.F. Preparation of the Fe–TiC composites by thermal-explosion mode of combustion synthesis. Ceramics International, 1997, vol. 23 (2), pp. 185–189. DOI: 10.1016/s0272-8842(96)00022-3.



27. Lyakhov N.Z., Talako T.L., Grigor'eva T.F. Vliyanie mekhanoaktivatsii na protsessy fazo- i strukturoobrazovaniya pri samorasprostranyayushchemsya vysokotemperaturnom sinteze [Influence of mechanical activation on the processes of phase and structure formation during self-propagating high-temperature synthesis]. Novosibirsk, Parallel’ Publ., 2008. 168 p.



28. Baranovskiy A.V., Pribytkov G.A., Krinitcyn M.G., Homyakov V.V., Dankovcev G.O. Extending the SHS combustion concentration limits in Ti+C+Fe powder mixtures by preliminary mechanical activation. Materials Today: Proceedings, 2020, vol. 25 (3), pp. 458–460. DOI: 10.1016/j.matpr.2019.12.176.



29. Pribytkov G.A., Baranovskiy A.V., Korzhova V.V., Krinitcyn M.G. Mechanoactivated SHS in ferrotitanium–carbon black powder mixtures. International Journal of Self-Propagating High-Temperature Synthesis, 2020, vol. 29 (1), pp. 61–63. DOI: 10.3103/S1061386220010082.



30. Baranivskiy A.V., Pribytkov G.A., Korzhova V.V., Korosteleva E.N. Combustion synthesis in FeTi+C mechanically activated mixture. AIP Conference Proceedings, 2022, vol. 2509, p. 020017. DOI: 10.1063/5.0084735.



31. Pribytkov G.A., Baranovskiy A.V., Korzhova V.V., Firsina I.A., Krivopalov V.P. Synthesis of Ti–Fe intermetallic compounds from elemental powders mixtures. Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science, 2023, vol. 25, no. 3, pp. 126–136. DOI: 10.17212/1994-6309-2023-25.3-126-136. (In Russian).



32. Bartin I., Knacke O., Kubaschevski O. Thermodinamical properties of inorganic substances. Supplement. Berlin, Springer-Verlag, 1977. 861 p. DOI: 10.1007/978-3-662-02293-1.



33. Kosolapova T.Ya., ed. Svoistva, poluchenie i primenenie tugoplavkikh soedinenii [Properties, production and use of refractory compounds]. Moscow, Metallurgiya Publ., 1986. 928 p.



34. Lyakishev N.P., ed. Diagrammy sostoyaniya dvoinykh metallicheskikh sistem. V. 3 t. T. 1 [Phase diagrams of binary metal systems. In 3 vol. Vol. 1]. Moscow, Mashinostroenie Publ., 1996. 992 p. ISBN 5-217-02688-X.



35. Kudrya N.A., ed. Sovremennye instrumental'nye materialy na osnove tugoplavkikh soedinenii [Modern tool materials based on refractory compounds]. Moscow, Metallurgiyya Publ., 1985. 127 p.



36. Zueva L.V., Gusev A.I. Effect of nonstoichiometry and ordering on the period of the basis structure of cubic titanium carbide. Physics of the Solid State, 1999, vol. 41 (7), pp. 1032–1038. DOI: 10.1134/1.1130931.

Acknowledgements. Funding

The work was supported by the Russian Science Foundation (project number 23-29-00106): “In situ synthesis of metal matrix composites with submicron carbide strengthening phase”.

For citation:

Pribytkov G.A., Baranovskiy A.V., Firsina I.A., Akimov K.O., Krivopalov V.P. Study of Fe-matrix composites with carbide strengthening, formed by sintering of iron titanides and carbon mechanically activated mixtures. Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science, 2024, vol. 26, no. 2, pp. 212–223. DOI: 10.17212/1994-6309-2024-26.2-212-223. (In Russian).

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