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Journal of Materials Science

, Volume 28, Issue 19, pp 5317–5324 | Cite as

Influence of vanadium on the static recrystallization of austenite in microalloyed steels

  • S. F. Medina
  • J. E. Mancilla
  • C. A. Hernandez
Papers

Abstract

Torsion tests were conducted to study the static recrystallization of three microalloyed steels manufactured by electroslag remelting (ESR) with different percentages of vanadium, 0.043%. 0.060% and 0.095%, respectively, and approximately equal percentages of the other alloyforming elements. It was seen that, in contrast to niobium, dissolved vanadium has no influence on the activation energy. The influence only becomes notable when the precipitates start to form and the activation energy increases rapidly, thus inhibiting recrystallization. The critical temperature at which inhibition commences was measured as a function of the vanadium content and the deformation performed, and in all cases it was lower than the dissolution temperature deduced from the solubility products for nitrides, mainly because the testing conditions lacked thermodynamic equilibrium. Finally, a comparison was made of the microstructures obtained in two commercial steels, namely a C-Mn type steel and a vanadium microalloyed steel. Both were subjected to the same cycle of successive deformations, whose temperatures were lower than the critical temperature. After the last deformation, a much harder austenite was obtained in the microalloyed steel than in the C-Mn steel.

Keywords

Activation Energy Austenite Vanadium Nitrides Niobium 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1993

Authors and Affiliations

  • S. F. Medina
    • 1
  • J. E. Mancilla
    • 2
  • C. A. Hernandez
    • 3
  1. 1.Metallurgical Research National Center (CENIM)MadridSpain
  2. 2.Autonomous University (UAP)PueblaMexico
  3. 3.Chemical Faculty (Ed. D)Autonomous National University (UNAM)Mexico

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