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Effect of bainitic transformation on bake hardening in TRIP assisted steel

Journal Article


Abstract


  • Bake hardening is a phenomenon where freshly generated dislocations get pinned down by the migrating carbon atoms under the influence of temperature employed in paint baking shop. Experimentally, a minimal 2% deformation is given to generate such new dislocations. On the other hand, after bainitic transformation, steel contains a large number of dislocations as well as excess carbon atoms in bainite, a combination of which is capable of producing bake hardening effect. In the current analysis, one grade of transformation induced plasticity aided steel was chosen to study the effect of isothermal bainitic transformation on subsequent bake hardening response, without giving any deformation assuming that the previous treatment would have generated sufficient dislocations which could be pinned down by the migrating carbon atoms under the influence of thermal treatment of the bake hardening process. The final microstructure was characterised by many techniques, using Thermo-Calc, optical microscopy, XRD analysis and 3-DAP. A good agreement was observed amongst all the techniques employed.

Authors


  •   Das, Sumitesh (external author)
  •   Timokhina, Ilana B. (external author)
  •   Singh, S B. (external author)
  •   Pereloma, Elena V.
  •   Mohanty, O N. (external author)

Publication Date


  • 2012

Citation


  • Das, S., Timokhina, I., Singh, S. B., Pereloma, E. & Mohanty, O. N. 2012, 'Effect of bainitic transformation on bake hardening in TRIP assisted steel', Materials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing, vol. 534, no. February 1, pp. 485-494.

Scopus Eid


  • 2-s2.0-84856551542

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1009

Has Global Citation Frequency


Number Of Pages


  • 9

Start Page


  • 485

End Page


  • 494

Volume


  • 534

Issue


  • February 1

Place Of Publication


  • Switzerland

Abstract


  • Bake hardening is a phenomenon where freshly generated dislocations get pinned down by the migrating carbon atoms under the influence of temperature employed in paint baking shop. Experimentally, a minimal 2% deformation is given to generate such new dislocations. On the other hand, after bainitic transformation, steel contains a large number of dislocations as well as excess carbon atoms in bainite, a combination of which is capable of producing bake hardening effect. In the current analysis, one grade of transformation induced plasticity aided steel was chosen to study the effect of isothermal bainitic transformation on subsequent bake hardening response, without giving any deformation assuming that the previous treatment would have generated sufficient dislocations which could be pinned down by the migrating carbon atoms under the influence of thermal treatment of the bake hardening process. The final microstructure was characterised by many techniques, using Thermo-Calc, optical microscopy, XRD analysis and 3-DAP. A good agreement was observed amongst all the techniques employed.

Authors


  •   Das, Sumitesh (external author)
  •   Timokhina, Ilana B. (external author)
  •   Singh, S B. (external author)
  •   Pereloma, Elena V.
  •   Mohanty, O N. (external author)

Publication Date


  • 2012

Citation


  • Das, S., Timokhina, I., Singh, S. B., Pereloma, E. & Mohanty, O. N. 2012, 'Effect of bainitic transformation on bake hardening in TRIP assisted steel', Materials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing, vol. 534, no. February 1, pp. 485-494.

Scopus Eid


  • 2-s2.0-84856551542

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1009

Has Global Citation Frequency


Number Of Pages


  • 9

Start Page


  • 485

End Page


  • 494

Volume


  • 534

Issue


  • February 1

Place Of Publication


  • Switzerland