Issues »  Volume 47, Issue 4

Steady State α→γ-Recrystallization of Ferritic Iron Alloys with a Cellular Structure of the Interfacial Surface during Carburization

K. O. Chornoivanenko, O. V. Movchan

Ukrainian State University of Science and Technologies, 2 Lazariana Str., UA-49010 Dnipro, Ukraine

Received: 26.09.2023; final version - 25.09.2024. Download: PDF

The mathematical model of single-phase cellular growth of the γ-phase layer during isothermal α→γ-recrystallization of a carburized ferritic iron alloy is constructed based on the performed analysis. Diffusion transfer of carbon through the γ-phase to the interphase surface is the main factor that determines the kinetics of α→γ-recrystallization during carburization. The expression for the distribution of carbon within the γ-phase in front of the flat phase interface (PI) during a steady-state process is obtained. The near-boundary concentration differences between the curved and flat PI are determined. The near-boundary mole fractions of the components inside the α- and γ-phases are calculated. Diffusion processes within the α-phase before PI are described. The expression relating diffusion processes within the α-phase in front of PI with the velocity of front advancement is obtained. Longitudinal sections of cells corresponding to limiting cases of surface-tension coefficient σ and microstructures during α→γ-recrystallization are presented. As shown, the PI cells have a pronounced crystalline facet during solid-phase recrystallization. In this case, the morphology of the cells depends on the crystallographic direction of growth of the γ-phase.

Key words: recrystallization, phase interface, cellular growth, carburization, stationary process, in situ composite.

URL: https://mfint.imp.kiev.ua/en/abstract/v47/i04/0347.html

DOI: https://doi.org/10.15407/mfint.47.04.0347

PACS: 05.70.Ce, 05.70.Np, 61.72.sh, 68.35.Md, 81.10.Aj, 81.10.Jt, 81.30.Bx

Citation: K. O. Chornoivanenko and O. V. Movchan, Steady State α→γ-Recrystallization of Ferritic Iron Alloys with a Cellular Structure of the Interfacial Surface during Carburization, Metallofiz. Noveishie Tekhnol., 47, No. 4: 347-359 (2025)

REFERENCES
  1. R. D. Sisson, J. R. Dayananda, and M. A. Dayananda, Metal. Trans., 3: 647 (1972).
  2. O. V. Movchan and K. O. Chornoivanenko, Usp. Fiz. Met., 19, No. 2: 185 (2018).
  3. W. W. Mullins and R. F. Sekerka, J. Appl. Phys., 35: 444 (1964).
  4. R. F. Sekerka, J. Appl. Phys., 36: 264 (1965).
  5. S. R. Coriell and R. F. Sekerka, Rapid Solidification Processing: Principles and Technologies (Eds. R. Mehrabian, B. H. Kear, and M. Cohen) (Louisiana: Claitor’s, Baton Rouge: 1980), p. 35.
  6. S. R. Coriell, G. B. McFadden, and R. F. Sekerka, Ann. Rev. Mater. Sci., 15: 119 (1985).
  7. S. R. Coriell and G. B. McFadden, Handbook of Crystal Growth (Ed. D. T. J. Hurl) (Amsterdam: Elsevier, 1993), vol. 1a, p. 785.
  8. S. H. Davis, Theory of Solidification (Cambridge: Cambridge University Press: 2001).
  9. K. P. Bunin, V. Y. Movchan, and V. V. Nikiforova, Izvestiya VUZov. Chernaya Metallurgiya, 2: 106 (1977) (in Russian).
  10. V. Y. Movchan and V. V. Vladimirova, Izvestiya AN SSSR. Metally, 6: 52 (1988) (in Russian).
  11. K. P. Bunin, V. I. Movchan, and L. G. Pedan, Izvestiya VUZov. Chernaya Metallurgiya, 2: 123 (1973) (in Russian).
  12. K. P. Bunin, V. I. Movchan, and L. G. Pedan, Izvestiya AN SSSR. Metally, 3: 164 (1975) (in Russian).
  13. V. I. Movchan, L. G. Pedan, and V. P. Gerasimenko, MiTOM, No. 9: 19 (1983) (in Russian).
  14. V. I. Movchan, L. G. Pedan, and V. I. Ivanitsa, MiTOM, No. 8: 12 (1990) (in Russian).
  15. V. M. Gavrilenko, V. P. Gerasimenko, and V. I. Movchan, Izvestiya AN SSSR. Metally, 3: 71 (1984) (in Russian).
  16. A. V. Movchan, S. I. Gubenko, A. P. Bachurin, and E. A. Chernoivanenko, Stroitel’stvo, Materialovedenie, Mashinostroenie, 64: 262 (2012) (in Russian).
  17. O. V. Movchan and K. O. Chornoivanenko, Metallurgical and Ore Mining Industry, 5–6: 76 (2019) (in Ukrainian).
  18. K. P. Bunin, V. Y. Movchan, and V. V. Nikiforova, Izvestiya VUZov. Chernaya Metallurgiya, 10: 121 (1974) (in Russian).
  19. K. P. Bunin, V. Y. Movchan, and V. V. Nikiforova, Izvestiya VUZov. Chernaya Metallurgiya, 10: 103 (1976) (in Russian).
  20. O. V. Movchan and K. O. Chornoivanenko, Metallofiz. Noveishie Tekhnol., 41, No. 1: 13 (2019).
  21. M. Hillert, Phase Equilibria, Phase Diagrams and Phase Transformations (Cambridge: Cambridge University Press: 2007).
  22. V. Y. Movchan, V. P. Gerasimenko, and T. N. Odynchenko, Izvestiya AN SSSR. Metally, 4: 116 (1981).

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