Grain structure and mechanical properties of high-nitrogen austenitic steel VNS-53‑SH after warm multidirectional isothermal forging

A.V. Kim ORCID logo , S.A. Akkuzin ORCID logo , I.Yu. Litovchenko, E.N. Moskvichev ORCID logo , N.A. Polekhina, D.S. Kushnereva показать трудоустройства и электронную почту
Получена 11 сентября 2023; Принята 06 ноября 2023;
Эта работа написана на английском языке
Цитирование: A.V. Kim, S.A. Akkuzin, I.Yu. Litovchenko, E.N. Moskvichev, N.A. Polekhina, D.S. Kushnereva. Grain structure and mechanical properties of high-nitrogen austenitic steel VNS-53‑SH after warm multidirectional isothermal forging. Письма о материалах. 2023. Т.13. №4s. С.470-474
BibTex   https://doi.org/10.22226/2410-3535-2023-4-470-474

Аннотация

The influence of warm multidirectional isothermal forging on the grain structure and mechanical properties of the high-nitrogen austenitic steel VNS-53-Sh has been studied. It has been shown that the average grain size was reduced to ~ 6 μm after forging compare to initial state due to the formation of small grains at the boundaries of the original grains and fragmentation of them. It promote an increase in strength properties.The effect of warm multidirectional isothermal forging on the grain structure and mechanical properties of a high-nitrogen austenitic steel is investigated. It is shown that after forging the average grain size is reduced to ≈6 μm compared to the initial state. This is due to the formation of fine grains at the original grain boundaries followed by their fragmentation. Under deformation, the steel grain structure significantly changes, with numerous low-angle misorientation boundaries being formed. The density of dislocations increases and a large number of dislocation substructures are formed. It is demonstrated that the yield strength at room temperature increases 2.5 times and reaches ≈1300 MPa, with elongation to failure decreasing down to ≈10 %.

Ссылки (20)

1. I. Litovchenko, S. Akkuzin, N. Polekhina, K. Almaeva, E. Moskvichev. Metals. 11, 645 (2021). Crossref
2. S. Akkuzin, I. Litovchenko, N. Polekhina, K. Almaeva, A. Kim, E. Moskvichev, V. Chernov. Metals. 12, 63 (2022). Crossref
3. S. Y. Mushnikova, S. K. Kostina, V. V. Sagaradze, N. V. Kataeva. Phys. Metals Metallogr. 118, 11 (2017). Crossref
4. R. Z. Valiev, R. K. Islamgaliev, I. V. Alexandrov. Progr. Mater. Sci. 45 (2), 103 (2000). Crossref
5. P. Dolzhenko, M. Tikhonova, M. Odnobokova, R. Kaibyshev, A. Belyakov. Metals. 13, 4 (2023). Crossref
6. A. Belyakov, S. Zherebtsov, M. Tikhonova, G. Salishchev. Mater. Phys. Mech. 24, 3 (2015).
7. D. M. Xu, G. Q. Li, X. L. Wan, R. L. Xiong, G. Xu, K. M. Wu, M. C. Somani, R. D. K. Misra. Mat. Sci. Eng.: A. 688, 407 (2017). Crossref
8. A. Belyakov, T. Sakai, H. Miura, K. Tsuzaki. Phil. Mag. A. 81, 11 (2001). Crossref
9. G. Svyazhin, L. M. Kaputkina. Izvestiya. Ferrous metallurgy. 62 (3), 173 (2019). (in Russian) [А. Г. Свяжин. Известия ВУЗов. Черная Металлургия. 62 (3), 173 (2019).]. Crossref
10. S. N. Ghali. SRIN. 84, 5 (2013). Crossref
11. Ts. V. Rashev, A. V. Eliseev, L. Ts. Jekova, P. V. Bogev. Steel Transl. 49, 7 (2019). Crossref
12. J. H. Shin, J. W. Lee. Mater. Char. 91, 19 (2014). Crossref
13. T. Allam, X. Guo, S. Sevsek, M. Lipińska-Chwałek, A. Hamada, E. Ahmed, W. Bleck. Metals. 9, 6 (2019). Crossref
14. V. G. Gavriljuk, H. Berns. High Nitrogen Steels: Structure, Properties, Manufacture, Applications. Springer Berlin, Heidelberg (1999) 378 p. Crossref
15. V. V. Glebov. Bulettin. of the VGAVT. 60 (1), 46 (2019). (in Russian) [В. В. Глебов. Вестник ВГАВТ. 60 (1), 46 (2019).].
16. Zh. Jiang, Zr. Zhang, Hb. Li, Zh. Li, M. Qi-feng. Int. J. Miner. Metall. Mater. 17, 729 (2010). Crossref
17. A. V. Kim, S. A. Akkuzin, I. Y. Litovchenko, N. A. Polekhina, D. S. Kushnereva. Russ. Phys. J. 66, 398 (2023). Crossref
18. O. A. Tonysheva, N. M. Voznesenskaya. Aviats. Mater. Tekhnol. 3 (32), 27 (2014). (in Russian) [О. А. Тонышева, Н. М. Вознесенская. Авиац. Матер. и Технол. 3 (32), 27 (2014).].
19. S. A. Akkuzin, I. Y. Litovchenko, A. V. Kim, E. N. Moskvichev, V. M. Chernov. Lett. Mater. 12 (4s), 394 (2022). Crossref
20. M. V. Kostina, O. A. Bannykh, V. M. Blinov. Met. Sci. Heat Treat. 42, 12 (2000). Crossref

Другие статьи на эту тему

Финансирование на английском языке

1. Government Research Assignment for the Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences - FWRW-2021-0008