PSI - Issue 40

N. Nikul’chenkov et al. / Procedia Structural Integrity 40 (2022) 354–358 N. Nikul'chenkov et al. / Structural Integrity Procedia 00 (2022) 000 – 000

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metallographic analysis of samples of the Fe 72.5 Cu 1 Nb 2 Mo 1.5 Si 14 B 9 alloy after annealing at 550 and 700 ° C showed good agreement with the sizes of the coherent scattering regions calculated from the XRD data. This agreement allows us to assume that there is no truly amorphous state in solid "amorphous" materials corresponding to the ideal short-range order. The structure of solid "amorphous" materials can be considered as "ultra-nanocrystalline" consisting of crystallites (clusters) with sizes of several interatomic distances. This is consistent with the provisions of Kraposhin and Talis (2016). Acknowledgements The reported study was funded by RFBR, project number 20-38-90117. We appreciate the assistance from the program of support for the leading universities in the Russia Federation for improvement of their competitiveness No 211 of the Government No 02.А03.21.0006 References Suryanarayana, C., Inoue, A., 2011. Bulk metallic glasses . CRC Press LLC, Boca Raton, pp. 525. Suryanarayana, C., Inoue, A., 2013. Iron-based bulk metallic glasses. International Materials Reviews 58, 131 – 166. Inoue, A., Takeuchi, A., 2011. Recent development and application products of bulk glassy alloys. Acta Materialia 59, 2243 – 2267. Li., H. X., Jung, H. Y., Yi, S., 2008. Glass forming ability and magnetic properties of bulk metallic glasses Fe 68.7 C7Si 3.3 B 5.5 P 8.7 Cr 2.3 Mo 2.5 Al 2 Co x (x = 0 – 10). J. Magn. and magn. mat. 320, 241 – 245. Herzer, G., 1997. Nanocrystalline soft magnetic alloys. Handbook of magnetic materials 10, 415 – 462. Huang, B., Yang, Y., Wang, A. D., Wang, Q., Liu, C. T., 2017. Saturated magnetization and glass forming ability of soft magnetic Fe-based metallic glasses. Intermetallics 84, 74 – 81. Zhai, X. B., Zhu, L., Zheng, H., Dai, Y. D., Chen, J. K., Wang, Y. G., Pan, F. M., 2018. Optimization of crystallization, microstructure and soft magnetic properties of Fe-B-Cu alloys by rapid cyclic annealing. Journal of Alloys and Compounds 768, 591 – 597. Yoshizawa, Y., Yamauchi, K., 1990. Fe-based soft magnetic alloys composed of ultrafine grain structure. Mat. Trans. 31, 307 – 314. Nikul’chenkov , N. N., Danilov, S. V., Cherepanov, K. E., Lobanov, M. L., 2019. Heat treatment parameters optimization for magnetic cores of amorphous finemet alloy. AIP Conference Proceedings 2174, 020145. Yoshizawa, Y. Oguma, S., Yamauchi, K., 1988. New Fe-based soft magnetic alloys composed of ultrafine grain structure. J. Appl. Phys. 64, 6044 – 6046. Zhu, L., 2019. Modulating the crystallization process of Fe 82 B 12 C 6 amorphous alloy via rapid annealing. Journal of Alloys and Compounds 785, 328 – 334. Starodubtsev, Yu. N., 2011. Magnitomyagkie materialy : Entsiclopedicheskii slovar-spravochnick, Technosphera, Moskva, pp. 664. (In Russian) [ Стародубцев , Ю . Н . 2011. Магнитомягкие материалы: Энциклопедический словарь - справочник , Техносфера, Москва, с. 554.]. Tsepelev, V. S., Starodubtsev, Yu. N., Zelenin, V. A., Kataev, V. A., Belozerov, V. Ya., Konashkov, V. V., 2017. Dilatometric analysis of the process of the nanocrystallization of Fe 72.5 Cu 1 Nb 2 Mo 1.5 Si 14 B 9 soft magnetic alloy. Phys. Met. Metallogr. 118, 553 – 557. Nikul’chenkov , N. N., Yurovskikh, A.S., Starodubtsev, Y. N., Lobanov, M.L., 2019. Phase and structural transformations in a nanocrystalline alloy Fe 72.5 Cu 1 Nb 2 Mo 1.5 Si 14 B 9 . Lett. Mater. 9, 64 – 69. Shtolts, A. K., Medvedev, A. I., Kurbatov, L. V., 2005. Rentgenovskii analiz mikronapryazhenii i razmera oblastei kogerentnogo rasseyaniya v polikritallicheskikh materialakh, UGTU-UPI, Ekaterinburg, pp. 23. (In Russian ) [Штольц, А. К., Медведев, А. И., Курбатов, Л. В., 2005. Рентгеновский анализ микронапряжений и размера областей когерентного рассеяния в поликристаллических материалах. УГТУ УПИ , Екатеринбург , с . 23.]. Kraposhin, V. S., Talis, A. L., 2016. Symmetry foundations of a polymer model for close-packed metallic liquids and glasses. Russian Metallurgy 2016, 101 – 108.