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Ti(CN) precipitation in microalloyed austenite during stress relaxation

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Abstract

Stress relaxation tests were carried out on a 0.05 pct C-0.007 pct N-0.25 pct Ti steel preheated to 1260 °C and then held in the temperature range 900 to 1050 °C. The precipitation of Ti(CN) that took place was followed by extraction replication. Dense precipitates were observed when stress plateaus appeared on the relaxation curves. The cube-shaped Ti(CN) precipitates were heterogeneously distributed in either a chain-like or a cell-like manner, indicating that the precipitates were nucleated on dislocations or on dislocation substructures. The changes in the size distribution of the precipitates during relaxation were also followed and analyzed in terms of the Zener diffusion controlled particle growth theory. The results suggest that Ti(CN) precipitation under the present experimental conditions proceeds in three sequential stages: (i) nucleation and growth according to a parabolic law; (ii) nucleation site saturation accompanied by growth alone; and (iii) Ostwald ripening. The time dependence of the mean Ti(CN) particle size is nonlinear during the first, and becomes linear during the second stage.

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References

  1. A. LeBon, J. Rofes-Vernis, and C. Rossard:Met. Sci., 1975, vol. 9, pp. 36–40.

    Article  CAS  Google Scholar 

  2. T. M. Hoogendoorn and M. H. Spanraft:Microalloying 75′, M. Korchynsky, ed., Union Carbide Corp., New York, NY, 1977, pp. 75–85.

    Google Scholar 

  3. C. Ouchi, T. Sanpei, T. Okita, and I. Kozasu:Hot Deformation of Austenite, J. B. Ballance, ed., AIME, New York, NY, 1977, pp. 316–40.

    Google Scholar 

  4. H. Watanabe, Y. E. Smith, and R. D. Pehlke:Hot Deformation of Austenite, J. B. Ballance, ed., AIME, New York, NY, 1977, pp. 140–68.

    Google Scholar 

  5. R. Simoneau, G. Begin, and A. H. Marquis:Met. Sci., 1978, vol. 12, pp. 381–86.

    Article  CAS  Google Scholar 

  6. I. Weiss and J. J. Jonas:Metall. Trans. A, 1979, vol. 10A, pp. 831–40.

    CAS  Google Scholar 

  7. S. S. Hansen, J. B. Vander Sande, and M. Cohen:Metall. Trans. A, 1980, vol. 11A, pp. 387–402.

    CAS  Google Scholar 

  8. S. Yamamoto, C. Ouchi, and T. Osuka:Thermomechanical Processing of Microalloyed Austenite, P. J. Wray and A. J. DeArdo, eds., AIME, Warrendale, PA, 1982, pp. 613–39.

    Google Scholar 

  9. M. G. Akben, I. Weiss, and J. J. Jonas:Acta Metall., 1981, vol. 29, pp. 111–21.

    Article  CAS  Google Scholar 

  10. M. G. Akben, B. Bacroix, and J. J. Jonas:Acta Metall., 1983, vol. 31, pp. 161–74.

    Article  CAS  Google Scholar 

  11. R. D. Naybour:Acta Metall., 1965, vol. 13, pp. 1197–1207.

    Article  CAS  Google Scholar 

  12. J. M. Silcock:JISI, 1973, vol. 211, pp. 792–800.

    CAS  Google Scholar 

  13. M. C. Chaturvedi, R. W. K. Honeycombe, and D.H. Warrington:JISI, 1968, vol. 206, pp. 1146–47.

    CAS  Google Scholar 

  14. J. M. Silcock and W. J. Tunstall:Phil. Mag., 1964, vol. 10, pp. 361–89.

    Article  CAS  Google Scholar 

  15. A. T. Davenport, R. E. Miner, and R. A. Kot:Hot Deformation of Austenite, J. B. Ballance, ed., AIME, New York, NY, 1977, pp. 186–203.

    Google Scholar 

  16. I. Weiss and J. J. Jonas:Metall. Trans. A, 1980, vol. 11A, pp. 403–10.

    CAS  Google Scholar 

  17. G. Fitzsimons, K. Tiitto, R. Fix, and A. J. DeArdo:Metall. Trans. A, 1984, vol. 15A, pp. 241–43.

    CAS  Google Scholar 

  18. M. G. Akben, T. Chandra, P. Plassiard, and J. J. Jonas:Acta Metall., 1984, vol. 32, pp. 591–601.

    Article  CAS  Google Scholar 

  19. W. J. Liu and J. J. Jonas:HSLA Steels: Metallurgy and Applications, J. M. Gray, T. Ko, S. Zhang, B. Wu, and X. Xie, eds., ASM, Beijing, 1987, pp. 253–58.

    Google Scholar 

  20. W. J. Liu and J. J. Jonas:Metall. Trans. A, 1988, vol. 19A, pp. 1403–13.

    CAS  Google Scholar 

  21. W. J. Liu: Ph.D. Thesis, McGill University, Montreal, Canada, 1987.

    Google Scholar 

  22. M. F. Ashby and R. Ebeling:Trans. AIME, 1966, vol. 236, pp. 1396–1404.

    CAS  Google Scholar 

  23. J. S. T. Van Aswegen, R. W. K. Honeycombe, and D. H. Warrington:Acta Metall., 1964, vol. 12, pp. 1–13.

    Article  Google Scholar 

  24. F. H. Froes, R. W. K. Honeycombe, and D. H. Warrington:Acta Metall., 1967, vol. 15, pp. 157–59.

    Article  CAS  Google Scholar 

  25. F. H. Froes and D. H. Warrington:Trans. AIME, 1969, vol. 245, pp. 2009–13.

    CAS  Google Scholar 

  26. V. Ramaswamy and D. R. F. West:JISI, 1970, vol. 208, pp. 395–400.

    CAS  Google Scholar 

  27. K. Tiitto, G. Fitzsimons, and A. J. DeArdo:Acta Metall., 1983, vol. 31, pp. 1159–68.

    Article  CAS  Google Scholar 

  28. C. Zener:J. Appl. Phys., 1949, vol. 20, pp. 950–53.

    Article  CAS  Google Scholar 

  29. I. M. Lifshitz and V. V. Slyozov:J. Physics Chem. Solids, 1961, vol. 19, pp. 35–50.

    Article  Google Scholar 

  30. C. Wagner:Z. Elektrochemie, 1961, vol. 65, pp. 581–91.

    CAS  Google Scholar 

  31. H. Moll and E. Ogilvie:Trans. AIME, 1959, vol. 215, pp. 613–18.

    Google Scholar 

  32. N. K. Balliger and R. W. K. Honeycombe:Met. Sci., 1980, vol. 14, pp. 121–33.

    CAS  Google Scholar 

  33. T. Chandra, I. Weiss, and J. J. Jonas:Can. Metall. Quarterly, 1981, vol. 20, pp. 421–28.

    CAS  Google Scholar 

  34. T. Chandra, I. Weiss, and J. J. Jonas:Met. Sci., 1982, vol. 16, pp. 97–104.

    Article  CAS  Google Scholar 

  35. T. Thorvaldsson and G. L. Dunlop:Met. Sci., 1982, vol. 16, pp. 184–90.

    Google Scholar 

  36. Ö. E. Atasoy:Metall. Trans. A, 1983, vol. 14A, pp. 379–84.

    Google Scholar 

  37. J. Strid and K. E. Easterling:Acta Metall., 1985, vol. 33, pp. 2057–74.

    Article  CAS  Google Scholar 

  38. A. J. Ardell:Acta Metall., 1972, vol. 20, pp. 601–09.

    Article  Google Scholar 

  39. H. Kreye:Z. Metallkunde, 1970, vol. 61, pp. 108–12.

    CAS  Google Scholar 

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Authors and Affiliations

  1. Department of Metallurgical Engineering, McGill University, 3450 University Street, H3A 2A7, Montreal, PQ, Canada

    W. J. Liu (Research Associate) & J. J. Jonas (Professor)

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  1. W. J. Liu
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  2. J. J. Jonas
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Liu, W.J., Jonas, J.J. Ti(CN) precipitation in microalloyed austenite during stress relaxation. Metall Trans A 19, 1415–1424 (1988). https://doi.org/10.1007/BF02674015

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