INOCULATION OF HIGH MANGANESE STEEL CASTINGS USING TITANIUM CARBONITRIDE

The article is devoted to study of the process of mold inoculation of high manganese steel castings using titanium carbonitride. Introduction considers basic principles, alloying and inoculation of casting alloys. Review of the papers on this topic made by native and foreign researchers was given. Conclusions were made on the materials presented in the studied papers, goals and tasks for studies were formed. Besides, in this part of the article relevance of the conducted researches was substantiated as well as practical significance for casters. The second part of the article describes routine of experiments. Materials involved when conducting experimental works were considered in details: charge materials, treatment agent, materials for foundry molds. Besides, there are also described the way to receive experimental cast products, methodology to determine thermal conditions for forming experimental models in foundry mold and regimen of thermal treatment. Herewith, methodology for conducting metallographical test was considered. The third part of the article mentions the results received during carrying out experimental works on mold inoculation using fine titanium carbonitride powder of high manganese steel castings. Influence of inoculation on the level of performance properties expressed via coefficients of abrasive wear and wear striking resistance was considered as well as change of the indicated peculiarities in relation to not inoculated alloy was evaluated. Besides, results of metallographical tests were given which allowed to substantiate change of the performance properties level of high manganese steel. Influence of thermal conditions of forming cast products was also evaluated, in particular speed of alloy cooling in foundry mold on the level of performance properties of inoculated high manganese steel. In final part of the article conclusions on the results of conducted researches were made as well as manufacturing recommendations were given for practical implementation of the work results to increase the level of performance properties of high manganese steel. Besides, recommendations on the most reasonable expenditure of titanium carbonitride powder ensuring receipt of the necessary characteristics of microstructure and as a consequence, increase of the level of performance properties were given.

1. Matti Lindroos, Marian Apostol, Vuokko Heino, Kati Valtonen, Anssi Laukkanen, Kenneth Holmberg, Veli-Tapani Kuokkala. The deformation, strain hardening, and wear behavior of chromiumalloyed Hadfield steel in abrasive and impact conditions. Tribology Letters. 2015, vol. 57, no. 3, article 24.

2. Xing Tian, Hong Li, Yansheng Zhang. Effect of Al content on stacking fault energy in austenitic Fe–Mn–Al–C alloys. Journal of Materials Science. 2008, vol. 43, no. 18, pp. 6214–6222.

3. Majid Abbasi, Shahram Kheirandish, Yosef Kharrazi, Jalal Hejazi. The fracture and plastic deformation of aluminum alloyed Hadfield steels. Materials Science and Engineering: A. 2009, July, vols. 513–514, рр. 72–76.

4. Mejia I., Bedolla-Jacuinde A., Pablo J.R. Sliding wear behavior of a high – Mn austenitic twinning induced plasticity (TWIP) steel microalloyed with Nb. Wear. 2013, vol. 301, Issues 1–2, pp. 590–597.

5. Nasajpour A., Kokabi A.H., Davami P., Nikzad S. Effect of molybdenum on mechanical and abrasive wear properties of coating of as weld Hadfield steel with flux-cored gas tungsten arc welding. Journal of Alloys and Compounds. 2016, vol. 659, pp. 262–269.

6. Qichuan J., Zhenming H., Donghuan C., Shoushi W., Jiulin Y. Abrasion-resistant as-cast manganese steel with nodular carbide modified by calcium. Journal of Materials Science Letters. 1990, May, vol. 9, no. 5, pp. 616-617.

7. Kudrin V.A., Shishimirov V.A. Metallurgiya stali: ucheb. posobie [Steel metallurgy: Tutorial]. Moscow: MGVMI, 2003, 254 p. (In Russ.).

8. Zhuchkov V.I., Sheshukov O.Yu., Lozovaya E.Yu. etc. Metody vvoda modifikatorov v metallicheskii rasplav [Methods for introducing treating agents into metallic melt]. IMET UrO RAN, UGTU-UPI, 2008, 6 p. (In Russ.).

9. Zhuchkov V.I., Sheshukov O.Yu., Lozovaya E.Yu., Marshuk L.A. Modern methods of treating agent introduction into cast iron and steel melts. In: Sb. dokladov Liteinogo konsiliuma no. 1 “Modifitsirovanie kak effektivnyi metod povysheniya kachestva chugunov i stalei” [Coll. of papers of the Foundry Council No. 1 “Inoculation as an Effective Method for Improving Quality of Cast Iron and Steel”]. Chelyabinsk: Chelyabinskii Dom pechati, 2006, 52 p. (In Russ.).

10. Sidorenko M.I. Teoriya i praktika produvki metalla poroshkami [Theory and practice of metal blowing with powders]. Moscow: Metallurgiya, 1973, 304 p. (In Russ.).

11. Fesenko M.A., Fesenko A.N. Perspective directions of using the method of mold inoculation of melt for making castings with specified performance properties. Lit’e i metallurgiya. 2013, vol. 73, no. 4, pp. 35–41. (In Russ.).

12. Chaikovskii A.A., Khasan O.S., Ol’shevskii V.S. Production of twolayer castings using the method of inoculation. Novye materialy i tekhnologii v mashinostroenii. 2009, no. 9, pp. 101–104. (In Russ.).

13. Baranov E.M. Mold inoculation of zirconium of gray cast iron and cast steel affected by NEMI. Vestnik instituta tyagi i podvizhnogo sostava. 2015, no. 11, pp. 77–79. (In Russ.).

14. Anikeev A.N., Bigeev A.V., Gordeev E.N., Chumanov V.I., Chumanov I.V. On possibility of introducing solid refractory particles in production of tube billets using the method of centrifugal casting. Vestnik YuUrGU. 2009, no. 36, pp. 24–27. (In Russ.).

15. Minnekhanov G.N., Shuikin O.A., Minnekhanov R.G. Effect of titanium carbonitride inoculation using nanoparticles and titanium doping on the structure and properties of pre-eutectic cast irons. Omskii nauchnyi vestnik. 2009, no. 1, pp. 22–25. (In Russ.).

16. Chumanov V.I., Pyatygin D.A., Chumanov I.V. Steel hardening using refractory disperse phase. Vestnik MGTU im. G.I. Nosova. 2007, no. 4, pp. 49-53. (In Russ.).

17. Anikeev A.N., Chumanov I.V., Sedukhin V.V., Arsent’eva A.S., Ladygin S.Yu. Investigation of influence of annealing on concentration of dispersed particles in volume of dispersed-hardened metallic materials. In: VI Vserossiiskaya konferentsiya po nanomaterialam s elementami nauchnoi shkoly dlya molodezhi. Moskva. 22 – 25 noyab rya 2016 g.: Sbornik materialov [VI All-Russ. Conf. on Nanomaterials with Elements of a Sci. School for Young People. Moscow. November 22-25, 2016: Coll. of materials]. Moscow: IMET RAN, 2016, pp. 344–346. (In Russ.).

18. Vdovin K.N., Gorlenko D.A., Feoktistov N.A. Investigation of influence of cooling rate in interval of excess phases separation on the cast microstructure of Hadfield steel. In: Sbornik trudov XIX mezhdunarodnoi nauchno-prakticheskoi konferentsii “Metallurgiya: tekhnologiya, innovatsiya, kachestvo” [Cool. Of papers of XIX Int. Sci.-Pract. “Metallurgy: technologies, innovations, quality”]. Protopopov E.V. ed. Novokuznetsk: Izd. tsentr SibGIU, 2015, pp. 125–129. (In Russ.).

19. Vdovin K.N., Feoktistov N.A., Gorlenko D.A., Khrenov I.B., Derya bin D.A. Study of the influence of cooling rate on the mechanical and performance properties of 110G13L steel. Liteishchik Rossii. 2015, no. 12, pp. 23–24. (In Russ.).

20. Vdovin K.N., Gorlenko D.A., Feoktistov N.A. Influence of stacking-fault energy on abrasive wear resistance of castings from Fe-12Mn-1,2C steel cooled with different rates. Izvestiya. Ferrous Metallurgy. 2016, vol. 59, no. 9, pp. 603–609. (In Russ.).

21. Kolokol’tsev V.M., Vdovin K.N., Chernov V.P., Feoktistov N.A., Gorlenko D.A. Investigation of mechanical and performance properties of high manganese steel alloyed with nitrogenous ferrochrome. Vestnik MGTU im. G.I. Nosova. 2016, no. 3, pp. 46–54. (In Russ.).