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Journal of Materials Science

, Volume 44, Issue 12, pp 3057–3060 | Cite as

Influence of the austenitic rolling temperature on the microstructure of a TRIP steel before intercritical annealing

  • C. N. dos SantosEmail author
  • A. G. Vieira
  • A. S. Paula
  • C. S. C. Viana
Article

Abstract

In the present work, the influence of different thermomechanical treatments in the final microstructure of a multiphase-steel (0.2%C–1.5%Mn–1.5%Si) through of morphological characterization of the transformation products was studied. The goal of this work was to investigate the volumetric fraction variation and phase distribution present in the microstructure. The steel was submitted to intercritic annealing treatment (α + γ) with and without previous reheating after the hot-rolling. The microstructure was observed by optical microscopy and mechanical properties were measured by Vickers microhardness. The results show a typical microstructure of multiphase steel (“dual-phase”) with increase of the martensite volumetric fraction and hardness values when the steel was submitted to intercritic annealing without reheating after the hot-rolling.

Keywords

Ferrite Austenite Martensite Thermomechanical Treatment Intercritical Annealing 
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.

Notes

Acknowledgements

The authors are grateful to Instituto Militar de Engenharia, UFMG’s Escola de Engenharia, CSN’s Research Center and Instituto Nacional de Tecnologia for the support to carry out this work.

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • C. N. dos Santos
    • 1
    Email author
  • A. G. Vieira
    • 2
  • A. S. Paula
    • 3
  • C. S. C. Viana
    • 4
  1. 1.Instituto Militar de EngenhariaSeção de Engenharia Mecânica e de MateriaisRio de JaneiroBrazil
  2. 2.Centro Federal de Educação TecnológicoCoordenação de CiênciasBelo HorizonteBrazil
  3. 3.Companhia Siderúrgica NacionalGerência de Pesquisa e Desenvolvimento, Centro de PesquisasVolta RedondaBrazil
  4. 4.Escola de Engenharia Industrial Metalúrgica de Volta Redonda/UFFVolta RedondaBrazil

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