Carbon heterogeneities in austenite during Quenching & Partitioning (Q&P) process revealed by in situ High Energy X-Ray Diffraction (HEXRD) experiments

Sébastien Y.P. Allain (1) , Steve Gaudez (1) , Guillaume Geandier (2, 1) , Frédéric Danoix (3) , Michel Soler (4) , Mohamed Gouné (5)

1 IJL - Institut Jean Lamour
2 Labex DAMAS
3 GPM - Groupe de physique des matériaux
4 ArcelorMittal Maizières Research SA
5 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux

Based on the evolution of the positions and intensities of the diffraction peaks, high energy X-ray diffraction (HEXRD) is recognized as the ultimate method to follow quantitatively in situ phase transformations in steels. However, the possible asymmetricity of diffraction peaks is seldom considered, and is known to bear information. A procedure for quantifying their skewness is proposed. In the case of a third generation high strength steel obtained by quench and partitioning 1

Mots clés: steel; martensite; austenite; partitioning; X-Ray diffraction

Domaines: Matériaux

Sébastien Y.P. Allain, Steve Gaudez, Guillaume Geandier, Frédéric Danoix, Michel Soler, et al.. Carbon heterogeneities in austenite during Quenching & Partitioning (Q&P) process revealed by in situ High Energy X-Ray Diffraction (HEXRD) experiments. Scripta Materialia, 2020, 181, pp.108-114. ⟨10.1016/j.scriptamat.2020.02.022⟩. ⟨hal-02486495⟩