par Godet, Stéphane 
;Harlet, P.;Jacques, Patrice
Référence Steel research international, 77, 4, page (271-275)
Publication Publié, 2006-04
;Harlet, P.;Jacques, PatriceRéférence Steel research international, 77, 4, page (271-275)
Publication Publié, 2006-04
Article révisé par les pairs
| Résumé : | To develop high performance steels for automotive applications, enhanced strengthening mechanisms are required. This study aims at assessing the critical parameters leading to the refinement of the strain-induced ferrite matrix of thermomechanically processed multiphase steels. Hot rolling simulations allowed the definition of the temperature, strain and cooling rate conditions bringing about the formation of strain-induced ferrite with a reduced grain size. The relationship between the deformation and the concurrent or subsequent phase transformations is highlighted thanks to a thorough characterisation of the generated microstructures. It is also shown that the prior austenite grain size influences the distribution of the second phases within the finely grained ferrite matrix. |
