Damage of TWIP steels for automotive application

Julie Lorthios (1) , Anne-Françoise Gourgues (1) , P. Cugy (2) , C. Scott (2)

1 CDM - Centre des Matériaux
2 ArcelorMittal Maizières Research SA

Ultra high strength Fe-Mn-C austenitic steels with low Stacking Fault Energy (SFE) have been studied for more than fifty years [1]. They offer a great potential for reducing automotive body weight through their formability and their high mechanical properties. Tensile strength levels higher than 1000 MPa in combination with a high ductility (>50%) are reached by the optimization of the Twinning Induced Plasticity (TWIP) effect and the control of the microstructure.

Domaines: Matériaux

Julie Lorthios, Anne-Françoise Gourgues, P. Cugy, C. Scott. Damage of TWIP steels for automotive application. International conference on fracture, Jul 2009, Ottawa, Canada. 10 p. ⟨hal-00822287⟩