The possibility of obtaining solid ingots (without gas porosity) of steel of the Fe–Cr–Mn–Mo–Al–Mg– N–C system by the method of self-propagating high-temperature synthesis under nitrogen pressure is demonstrated. The structure of an ingot consists of a high nitrogen austenitic matrix; within which dispersed reinforcing inclusions are evenly distributed throughout the volume. These inclusions are conglomerates in the center of which magnesium oxide is concentrated with impurities of aluminum oxide, and around which aluminum nitride is located. The structural and phase composition of this steel is studied in a cast condition and after heat treatment at 1250°C for 2 hours followed by water quenching. A reduction in specimen hardness after homogenizing heat treatment is revealed: from 389 HV to 271 HV. In this case matrix microhardness in a heat-treated specimen is 40 HV lower than the overall hardness of a specimen. This demonstrates the reinforcing effect of uniformly distributed dispersed inclusions detected.
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References
M. A. Filippov and O. Yu. Sheshukov, Friction and Antifriction Materials: Teaching Aid [in Russian], RF Min. Science and Higher Education. Izd. Ural. Univ., Ekaterinburg (2021); ISBN 978-5-7996-3389-9.
Yu. K. Mashkov and O. V. Malii, Structural Material Tribophysics: Teaching Aid [in Russian] Minobrnauki Rossii, OmGTY, Izd. OmGTU, Omsk (2017); ISBN 978-5-8149-2439-1.
L. G. Korshunov, N. I. Noskova, N. L. Chernenko, N. F. Vil’danova, and A. V. Korznikov, “Effect of severe plastic deformation on the microstructure and tribological properties of a babbit B83,” The Physics Metals and Metallography, 108, No. 5. 551–559 (2009); https://doi.org/10.1134/S0031918X0911012X.
V. V. Ilyushin and B. A. Potekhin, “ Turbulent casting technology – new method for improving alloy structure,” Lit’e Metallurg., No. 3, 69–72 (2010); https://doi.org/10.21122/1683-6065-2010-3-69-
Ts. V. Rashev, A. V. Elisaev, L. Ts. Zhekova, and P. V. Bogev, “High-nitrogen steels,” Izv. Vuzov. Chern. Met., 62, No. 7, 503-510 (2019); https://doi.org/10.17073/0368-0797-2019-7-503-510.
V. G. Gavriljuk, and H. Berns, High Nitrogen Steels: Structure, Properties, Manufacture, Applications. Springer-Verlag, Berlin: Heidelberg; New York (1999)
G. Stein and I. Hucklenbroich, “Manufacturing and applications of high nitrogen steels,” J. Materials and Manufacturing Processes, 19, No. 1, 7–17 (2004).
B. Raj (editor), High Nitrogen Steels and Stainless Steels. Manufacturing, Properties and Applications, Woodhead Publishing, UK (2004)..
M. O. Speidel, “ Nitrogen containing austenitic stainless steels,” Materialwissenschaft und Werkstofftechnik, 37, No. 10, 875–880 (2006); https://doi.org/10.1002/mawe.200600068.
Yu. V Kuznetsov, 2O. S. Muradyan, and S. O. Muradyan, “Development of high-strength corrosion-resistant austenitic steel for oil equipment shafts,” Metallurg., No. 10, 32–35 (20121).
S. O. Muradyan, “Phase composition, structure and properties of austenitic nitride corrosion resistant steel for power engineering,” in: Proc. XIII Russ. Conf. of Young Scientists, Coworkers and Aspirants “Physical Chemistry and Technology of Inorganic Materials,” October 17-20 (2017) IMET RAN, Moscow, 17–20 October (2017).
G. A. Dorofeeev, V. A. Karev, E. C. Kuz’myniykh, V. I. Lad’yanov, A. N. Lubnin, A. S. Vaulin, and M. I. Mokrushina, “ Question of preparing high-nitrogen corrosion-resistant steels by an aluminothermic method in a high-pressure nitrogen medium,” Metally, No. 1, 3014 (2013).
G. Dorofeev, V. Karev, O. Goncharov, E. Kuzminykh, I. Sapegina, A. Lubnin, M. Mokrushina, and V. Lad’yanov, “Aluminothermic reduction process under nitrogen gas pressure for preparing high nitrogen austenitic steels,” Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, 50, No. 2, 632–640 (2019); https://doi.org/10.1007/s11663-018-1499-x.
M. V. Kostina and L. G. Rigina, “Nitrogen-containing and production methods,” Izv. Vuz. Chern. Met., 63, No 3, 606-607 (2020); https://doi.org/10.17073/0368-0797-2020-8-606-622.
G. V. Shishalova, M. A. Kulakova, and E. E. Varlashova, “ Experience of using a spectrometer with an inductively-bonded plasma Spectroflame Modula S for studying reactor material chemical composition,” Analitika i Kontrol., 7, No. 2, 186–189 (2003).
A. A. Pupyshev and D. A. Danilova, “ Use of atomic emission spectrometry with an inductively bonded plasma for analysing and ferrous metallurgy materals and products,” Analitika Kontrol., 11, No. 2-3, 131–181 (2007).
V. A. Rabinovich and Z. Ya. Khavin, Short Chemical Reference [in Russian], A. A. Potekhin and A. I. Efimov (editors), 3rd. ed., Khimya, Leningrad (1991); ISBN 5-7245-0703-X.
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Translated from Metallurg, Vol. 67, No. 7, pp. 108–114, July, 2023.
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Konovalov, M.S., Lad’yanov, V.I., Mokrushina, M.I. et al. Structural-Phase Composition and Hardness of Steel of the Fe–Cr–Mn–Mo–Al–Mg–N–C System Obtained by the Method of Self-Propagating High-Temperature Synthesis Under Nitrogen Pressure. Metallurgist 67, 1029–1037 (2023). https://doi.org/10.1007/s11015-023-01593-2
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DOI: https://doi.org/10.1007/s11015-023-01593-2