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Effect of processing parameters on the grain refinement of vanadium nitrogen microalloyed steel

  • Baochun Zhao , Tan Zhao and Guiyan Li
Published/Copyright: March 26, 2018
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 109 Issue 4

Abstract

The effect of processing parameters on the grain refinement of vanadium nitrogen microalloyed steel was investigated by performing hot deformation tests. The interaction between static recrystallization and precipitation was analyzed and the effect of final temperature, cooling rate and holding time on the microstructure of the tested steel is discussed. The results showed that smaller ferrite grains could be obtained with lower temperature or higher cooling rate. It was found that carbonitrides could precipitate at temperatures around 850 °C, which could retard recrystallization. The precipitated particles could inhibit grain growth and promote ferrite nucleation, which leads to ferrite grain refinement. Therefore, fine ferrite grains could be obtained by performing multi-pass compression testing at this specific finishing temperature followed by appropriate holding.

Keywords: Vanadium nitrogen microalloyed steel; Microstructure refinement; Holding time; Precipitate
*Correspondence address, Senior engineer Baochun Zhao, Key Laboratory of Metal Materials for Marine Equipment and Application, An shan, Liao ning, P. R. China, Iron and Steel Research Institute of AnGang Group, An shan, Liao ning, P. R. China, Tel.: +8 60 41 26 72 41 52, Fax: +8 60 41 26 73 62 07, E-mail:

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Received: 2017-08-16
Accepted: 2017-11-07
Published Online: 2018-03-26
Published in Print: 2018-04-13

© 2018, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.111608
Keywords for this article
Vanadium nitrogen microalloyed steel; Microstructure refinement; Holding time; Precipitate

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Deposition of CVD-TiCN and TiAlN coatings guided with thermodynamic calculations
  5. Microstructure and mechanical properties of ultra-fine WC-10Co cemented carbides with Cr3C2 and NbC: Experimental investigation supported by thermodynamic calculation
  6. Enthalpies of mixing in binary Mn–In and ternary Mn–In–Gd liquid alloys
  7. Thermal stability of Nb–Cr–Mo alloy
  8. Effect of processing parameters on the grain refinement of vanadium nitrogen microalloyed steel
  9. Effects of heat treatment and testing temperature on the tensile properties of Al–Cu and Al–Cu–Si based alloys
  10. Fabrication of Al–Si Gasar by mold casting technique
  11. Tribological performance of glass/epoxy composites filled with MWCNTs
  12. Reaction fabrication and wear performance of TiCx/(Cu–A1) bonded diamond composites
  13. DC-EPD of nanoceramic particles accelerated via anodic dissolution in organic media
  14. Short Communications
  15. Formation of zirconia precursor nanoplates mediated by ionic liquid and transformation to monoclinic ZrO2 nanostructures
  16. Characterization of interfaces in tri-layered brass/steel/brass composites fabricated by casting and hot dipping
  17. DGM News
  18. DGM News
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