Metal Science and Heat Treatment

, Volume 58, Issue 11–12, pp 697–703 | Cite as

Complex Nonmetallic Inclusions Formed in Billets Heated for Rolling and Characteristics of Structural Steels

  • A. I. ZaitsevEmail author
  • A. V. Koldaev
  • N. A. Arutyunyan
  • N. G. Shaposhnikov
  • S. F. Dunaev

Complex bimetallic inclusions formed in billets from steels 09G2S and K52 during heating for rolling are studied by methods of electron microscopy and local x-ray spectrum analysis. To check the established evolution of oxide inclusions based on aluminomagnesium spinel and other oxide compositions, individual inclusions of manganese sulfide and complex oxide-sulfide inclusions, a method developed by the Severstal’Company and the Karpov NIFKhI for determining the content of corrosion-active nonmetallic inclusions (CANI) as a function of the heating mode is applied to the steels studied. It is recommended to increase the temperature and duration of heating of billets for hot rolling in order to lower the content of CANI and to raise the resistance of the steels to local corrosion.

Key words

structural steels heating of billets complex nonmetallic inclusions precipitates corrosion resistance operating properties 


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Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  • A. I. Zaitsev
    • 1
    • 2
    Email author
  • A. V. Koldaev
    • 1
  • N. A. Arutyunyan
    • 1
    • 2
  • N. G. Shaposhnikov
    • 1
  • S. F. Dunaev
    • 2
  1. 1.I. P. Bardin Central Research Institute for Ferrous MetallurgyMoscowRussia
  2. 2.Chemical Faculty of Moscow State UniversityMoscowRussia

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