Non-destructive 3-D reconstruction of the martensitic phase in a dual-phase steel using synchrotron holotomography

Caroline Landron (1, 2) , Eric Maire (1, 2) , J. Adrien (1) , Heikki Suhonen (2) , Peter Cloetens (2) , Olivier Bouaziz (3, 4)

1 MATEIS - Matériaux, ingénierie et science [Villeurbanne]
2 ESRF - European Synchrotron Radiation Facility
3 ArcelorMittal Maizières Research SA
4 CDM - Centre des Matériaux

This paper presents the first non-destructive three-dimensional characterization of a dual-phase ferrite/martensite steel. The martensitic phase was imaged using the holotomography technique based on phase contrast. The visualization and the study of the volume distribution of the martensitic phase confirmed that the martensite forms a partial network around the ferritic grains. The simultaneous visualization of ductile damage induced by tensile deformation using the same technique was also performed, but proved to be more challenging.

Mots clés: Synchrotron radiation; Tomography; Steel; Dual-phase; Damage

Domaines: Matériaux

Caroline Landron, Eric Maire, J. Adrien, Heikki Suhonen, Peter Cloetens, et al.. Non-destructive 3-D reconstruction of the martensitic phase in a dual-phase steel using synchrotron holotomography. Scripta Materialia, 2012, 66, pp.1077-1080. ⟨10.1016/j.scriptamat.2012.03.003⟩. ⟨hal-00714419⟩