Synchrotron, Neutron and Classical X-ray Measurement in An Electron Beam Welded Martensitic Steel

Article type: Research Article

Authors: Asserin, O.^; | Braham, C. | Lodini, A.^;

Affiliations: LM3, ENSAM-CNRS ESA, 8006, 151 Bd de I’hôpital 75013 Paris cedex Paris, France | Laboratoire d’Analyse des Contraintes Mécaniques Université de Reims, Reims, France | Laboratoire Léon Brillouin CEA/CNRS, CEN Saclay, France

Note: [] Corresponding author. E-mail: [email protected]

Abstract: The F82-H modified martensitic steel is currently one of the best options for the first wall of future fusion reactors. Martensitic steel samples of F82-H (0.1 C; 8 Cr; 2 W; 0.2 V; 0.1 Mn; 0.1 Si wt %) have been electron beam welded. Strain analysis by classical X-ray, synchrotron and neutron diffraction were carried out at different distances from the weld centre (0, 1, 2, 3, 4 and 5 mm). Strain and stress calculations require the determination of the exact unstressed lattice parameter (d0), which is determined by XRD. Material characterization and line broadening measurements by X-rays and neutrons were performed. The integral breadth values measured by X-rays and neutrons coincide and can be compared to the micro-hardness profile.

Keywords: Synchrotron, Neutron, X-ray, Residual stress, Diffraction, Line broadening

DOI: 10.1080/10238160108200162

Journal: Journal of Neutron Research, vol. 9, no. 2-4, pp. 351-356, 2001