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Metal Science and Heat Treatment

, Volume 59, Issue 9–10, pp 551–555 | Cite as

A Study of the Cold Resistance of Coiled Stock for Pipes Produced at Foundry-Rolling Works. Part 1

  • O. A. Bagmet
  • V. V. Naumenko
  • K. S. Smetanin
Article
  • 24 Downloads

The mechanical properties, the microstructure, and the cold resistance of coiled strips from low-carbon manganese-and silicon-alloyed steels with different additions of niobium and titanium produced by direct rolling of thin slabs right after their continuous casting under the conditions of foundry-rolling works are studied. It is shown that the addition of 0.01% Ti into the steel alloyed with 0.04% niobium has a positive effect on the ductility, toughness and cold resistance of the rolled strips and a negative effect on the strength. A high (0.08%) content of niobium is favorable for the impact toughness and resistance to brittle fracture of Charpy specimens of the steels studied under negative temperatures of up to –80°C.

Key words

foundry-rolling facility controlled rolling microalloying cold resistance microstructure impact toughness delamination 

References

  1. 1.
    M. Fornasier, K. Piemonte, A. Pigani, et al., “Casting and rolling of thin slabs from steels of category API for arctic applications,” Metallurg. Proizvod. Tekhnol., No. 1, 26 – 29 (2011).Google Scholar
  2. 2.
    L. I. Efron, Metal Science in “Large” Metallurgy. Pipe Steels [in Russian], Metallurgizdat, Moscow (2012), 696 p.Google Scholar
  3. 3.
    I. P. Shabalov, Yu. D. Morozov, and L. I. Efron, Steels for Pipes and Building Constructions with Elevated Operating Properties [in Russian], Metallurgizdat, Moscow (2003), 520 p.Google Scholar
  4. 4.
    V. V. Naumenko, A. V. Muntin, A. V. Chervonnyi, and L. I. Efron, “Effect of microalloying on the microstructure and level of mechanical properties of coiled stock of strength class K56 produced at the LPK,” Stal’, No. 7, 50 – 54 (2015).Google Scholar
  5. 5.
    A. V. Chervonnyi, V. V. Naumenko, A. V. Muntin, et al., “Microalloying of cold-resistant pipe steels for fabricating coiled stock at foundry-rolling works,” Stal’, No. 9, 56 – 61 (2015).Google Scholar
  6. 6.
    T. Hara, H. Asahi, Y. Shinohara, and Y. Terada, “Effects of microstructure and texture on DWTT properties for high strength line pipe steels,” in: Proc. Int. Pipeline Conf., Canada, 2006, pp. 245 – 250.Google Scholar
  7. 7.
    E. Pauletti, H. L. Haskel, J. P. Martins, and A. Carvalho, “Influence of delamination on microtexture and JR curve in API X60 steel,” in: 13th Int. Conf. on Fracture, China, 2013, pp. 1 – 9.Google Scholar
  8. 8.
    M. S. Joo, D. W. Suh, J. H. Bae, and H. K. D. H. Bhadeshia, “Role of delamination and crystallography on anisotropy of Charpy toughness in API-X80 steel,” Mater. Sci. Eng., A546, 314 – 322 (2012).CrossRefGoogle Scholar
  9. 9.
    H. L. Haskel, E. Pauletti, J. P. Martins, and A. L. M. Carvalho, “Microstructure and microtexture assessment of delamination phenomena in Charpy impact tested specimens,” Mater. Res., 17(5), 1238 – 1250 (2014).CrossRefGoogle Scholar
  10. 10.
    R. D. K. Misra, H. Nathahi, F. Siciliano, and T. Carneiro, “Effect of texture and microtexture on resistance to cracking of high-strength hot-rolled Nb – Ti microalloyed steels,” Metall. Mater. Trans., 35A, 3024 – 3029 (2004).CrossRefGoogle Scholar
  11. 11.
    V. M. Farber, V. A. Khotinov, A. N. Morozova, and T. Martin, “Delamination and its contribution into the impact toughness of steels of strength class K65 (X80),” Metalloved. Term. Obrab. Met., No. 8, 39 – 44 (2015).Google Scholar
  12. 12.
    G. Manucci and G. Demofonti, “Control of ductile fracture propagation in X80 gas pipeline,” in: Int. Pipeline Tech. Conf., Beijing, 2010, pp. 86 – 115.Google Scholar
  13. 13.
    A. B. Arabey, I. Yu. Pyshmintsev,M. A. Shtremel, et al., “Resistance of steels of strength class X80 to propagation of ductile cracks in delivery pipelines,” Izv. Vysh. Uchebn. Zaved., Chern. Metall., No. 9, 9 – 15 (2009).Google Scholar
  14. 14.
    I. Yu. Pyshmintsev, M. A. Smirnov, A. N. Mal’tseva, et al., “Structure and properties of low-carbon pipe steels subjected to pneumatic tests,” Stal’, No. 2, 75 – 81 (2011).Google Scholar
  15. 15.
    T. Inoue, F. Yin, Y. Kimura, et al., “Delamination effect on impact properties in ultrafine-grained low-carbon steel processed by warm caliber rolling,” Metall. Trans. A, 41A, 341 – 355 (2010).CrossRefGoogle Scholar
  16. 16.
    V. M. Schastlivtsev, T. I. Tabatchikov, I. L. Yakovleva, et al., “Effect of texture of the cold resistance of weldable steel subjected to thermomechanical treatment,” Deform. Razrush., No. 11, 34 – 40 (2010).Google Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • O. A. Bagmet
    • 1
  • V. V. Naumenko
    • 1
  • K. S. Smetanin
    • 1
  1. 1.Vyksunsky Metallurgical PlantVyksaRussia

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