Characterization of residual stresses in Eurofer welded specimens: measurements by neutron diffraction and comparison with weld modeling - CEA - Commissariat à l’énergie atomique et aux énergies alternatives Access content directly
Journal Articles Journal of Nuclear Materials Year : 2011

Characterization of residual stresses in Eurofer welded specimens: measurements by neutron diffraction and comparison with weld modeling

Abstract

The stress field of a dual-beam laser weld on a Eurofer-97 model plate has been experimentally determined by neutron diffraction measurements. The measurements were carried out at the ILL-Grenoble,in the three principal directions, at different distances from the weld and inside the weld itself. In the longitudinal direction, the most relevant for technical applications, there is good agreement between these experimental results and results obtained by finite element numerical methods: tensile stresses as high as 750 MPa are found inside the weld, rapidly decreasing with increasing distance from the weld centre. In the two other directions the agreement between experimentally determined and calculated stresses is still good far from the weld; inside the weld the experimental data are affected by the strong texture detected by X-ray diffraction, possibly produced by the heating and subsequent cooling of the structure.
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Dates and versions

cea-02284969 , version 1 (11-12-2023)

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Roberto Coppola, Olivier Asserin, Philippe Aubert, Chedly Braham, Arnaud Monnier, et al.. Characterization of residual stresses in Eurofer welded specimens: measurements by neutron diffraction and comparison with weld modeling. Journal of Nuclear Materials, 2011, 417 (1-3), pp.51-54. ⟨10.1016/j.jnucmat.2010.12.051⟩. ⟨cea-02284969⟩
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