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E. G. Volkova, V. V. Sagaradze, I. Yu. Malygina

SPECIAL FEATURES OF THE GRANULAR STRUCTURE OF THE SURFACE ZONE IN PIPE STEEL 12Kh18N12T

DOI: 10.17804/2410-9908.2015.6.063-067

The structure of 12Kh18N12T austenitic pipe steel has been studied by scanning and electron microscopy. It has been shown that the lubricant remaining on the internal surface of a pipe after rolling causes an increase in the carbon content in the near-surface layer under subsequent annealings. Carbide particles are formed in the structure near the internal surface, and considerable grain refining is observed.

Keywords: austenitic steels, carbide particles, heterogranularity, electron and scanning microscopy

References:

  1. Gorelik S.S. Rekristallizatsiya metallov i splavov [Recrystallization of Metals and Alloys]. M., Metallurgiya Publ., 1978, 567 p. (In Russian).
  2. Gorbachev S.V., Shchipachev A.M., Lutfullin R.Ya. Studying the heterogranularity of steel 20 welded joints under thermomechanical processing. Elektronnyi nauchnyi zhurnal Neftegazovoe delo, 2014, no. 1, pp. 302–316. DOI: 10.17122/ogbus-2014-1-289-301. (In Russian).
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  4. Goli-Oglu E.A., Efron L.I., Morozov Yu.D. Effect of deformation regime in main stages of controlled rolling on pipe steel microstructure. Metal Science and Heat Treatment, 2013, vol. 55, iss. 5–6, pp. 294–297. DOI: 10.1007/s11041-013-9622-8.
  5. Vorobyov Yu.Ya. Thermodynamics, phase composition and structure of steel carbides. I. Carbides of 3D elements. Voprosy materialovedenia, 2007, no. 2, pp. 34–43. (In Russian).


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Article reference

Volkova E. G., Sagaradze V. V., Malygina I. Yu. Special Features of the Granular Structure of the Surface Zone in Pipe Steel 12kh18n12t // Diagnostics, Resource and Mechanics of materials and structures. - 2015. - Iss. 6. - P. 63-67. -
DOI: 10.17804/2410-9908.2015.6.063-067. -
URL: http://eng.dream-journal.org/issues/content/article_61.html
(accessed: 05/22/2024).

 

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Chief Editor:  S.V. Smirnov
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