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Particularities of the formations of bainite and martensite/austenite phase in low carbon low alloy steels during continuous cooling

  • Igor Yakubtsov , Richard Zhang and Doug Boyd
Published/Copyright: June 11, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 102 Issue 5

Abstract

The industrial X80 steel chemistry has been modified by increased amounts of Mn, Cr and a new leaner base chemistry (0Ni-0Cu-0.04Nb) has been used with carbon contents of ± 0.04 and 0.07 wt.%. Continuous-cooling-transformation diagrams were obtained by deformation dilatometry to determine the effects of steel compositions on phase transformations and microstructure evolution with cooling rates in the range of 0.5–130 Ks−1. The effects of alloying on bainite transformation, its kinetics and the formation of martensite/austenite constituents were determined. Thermodynamic analysis is carried out for the modified chemistries and it shows that growing bainite laths stimulate the decomposition of residual austenite by strain-induced martensite transformation at a later stage of the overall bainite transformation.

Keywords: Bainite; Acicular ferrite; Martensite; Austenite; Steels
* Correspondence address, Dr. Igor Yakubtsov 1950 Main St. West, # 604 Hamilton, Ontario, L8S 4M9, Canada. Tel.: +1 905 521 9227, Fax: +1 519 720 0449 E-mail:

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Received: 2010-1-27
Accepted: 2011-3-2
Published Online: 2013-06-11
Published in Print: 2011-05-01

© 2011, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.110506
Keywords for this article
Bainite; Acicular ferrite; Martensite; Austenite; Steels

Articles in the same Issue

  1. Original Contributions
  2. Alloying effect on microstructure and mechanical properties of thermomechanically processed Ni3(Si,Ti) alloys
  3. Contents
  4. Contents
  5. Original Contributions
  6. Neuro-finite element application in material characterization using small punch test
  7. Multi-phase biocomposite material in-situ fabricated by using hydroxyapatite and amorphous nanosilica
  8. Particularities of the formations of bainite and martensite/austenite phase in low carbon low alloy steels during continuous cooling
  9. Texture analysis of polymer modified bitumen images
  10. Influence of nitridation time on microstructure, morphology and optical properties of GaN nanowires by nitridizing Ga2O3/Cr thin films
  11. Deformation behaviour of freestanding single-crystalline Ni3Al-based nanoparticles
  12. Precipitation strengthening in high manganese austenitic TWIP steels
  13. Effects of pre-deformation and subsequent low-temperature annealing on transformation, mechanical properties and shape memory behavior of a Ti-rich TiNi alloy
  14. Enhancement in optical transmission of ZnO: Al film by c-orientation arrayed growth
  15. Physical and mechanical behavior of high strength self-compacting concrete containing ZrO2 nanoparticles
  16. Experimental and numerical studies of metallic powders subjected to cold isostatic pressing
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  20. People
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