Abstract
The effect of temperature variation owing to the cooling pattern (CP) on the microstructural evolution was investigated by establishing a thermomechanical coupled FE (finite element) model. A set of constitutive equations of phase transformation was implanted into the commercial FE solver MARC through the user defined subroutine CR-PLAW, and the temperature field was calculated by another user defined subroutine FILM. The results show that the final microstructure is completely bainite phase for CP one, 98% of bainite phase and 2% of ferrite phase for CP two, and 55% of bainite phase, 35% of pearlite phase and 10% of ferrite phase for CP three.
| Original language | English |
|---|---|
| Pages (from-to) | 28-+ |
| Journal | Journal of Iron and Steel Research International |
| Volume | 17 |
| Issue number | 10 |
| Publication status | Published - 1 Oct 2010 |
Keywords
- constitutive equation
- phase transformation
- microstructural evolution
- cooling pattern
- laminar cooling system
- hot rolling
- thermomechanical modelling