Microstructural and mechanical properties evolution during an isothermal annealing of a 0.04 % C al-killed steel

Authors

  • J. Millán Universidad Simón Bolívar; Dpto. Ciencia de los Materiales
  • A. L. Rivas Universidad Simón Bolívar; Dpto. Ciencia de los Materiales
  • J. M. Cabrera Universidad Politécnica de Cataluña; Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica ETSEIB
  • S. Camero Universidad Central de Venezuela; Facultad de Ingeniería, Escuela de Ingeniería Metalúrgica y Ciencia de los Materiales
  • J. C. Machado SIDOR (Siderúrgica del Orinoco)

DOI:

https://doi.org/10.3989/revmetalm.2005.v41.i6.234

Keywords:

Isothermal annealing, recrystallization, pancake structure

Abstract


The effect of heating rate and annealing time on the microstructure and mechanical properties of a commercial 0.04 % C Al-killed steel, cold rolled up to 80% is evaluated in the present study. For this purpose samples were isothermally annealed at various heating rates (12, 20, 40 and 650 °C/min) and then soaked at 700°C for 15 h. The microstructural evolution of the samples during the heating process and holding temperature was evaluated by optical microscopy, scanning and transmission electron microscopy. Tensile mechanical properties and hardness measurements were also correlated with the microstructural features. Results showed that with soaking time greater than 6 h, the mechanical properties specified for the material are reached, even though, appropriate plastic anisotropy values were only obtained in samples heated at low rates, where a "pancake" type of structure is also formed.

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Published

2005-12-30

How to Cite

Millán, J., Rivas, A. L., Cabrera, J. M., Camero, S., & Machado, J. C. (2005). Microstructural and mechanical properties evolution during an isothermal annealing of a 0.04 % C al-killed steel. Revista De Metalurgia, 41(6), 427–440. https://doi.org/10.3989/revmetalm.2005.v41.i6.234

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