Neutron diffraction measurements have been carried out to develop a non-destructive experimental tool for characterizing the crystallographic structure and the internal stress field in W foil laminates for structural divertor applications in future fusion reactors. The model sample selected for this study had been prepared by brazing, at 1085 °C, 13 W foils with 12 Cu foils. A complete strain distribution measurement through the brazed multilayered specimen and determination of the corresponding stresses has been obtained, assuming zero stress in the through-thickness direction. The average stress determined from the technique across the specimen (over both 'phases' of W and Cu) is close to zero at -17 ± 32 MPa, in accordance with the expectations.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Materials Science (miscellaneous)
- Nuclear Energy and Engineering
Coppola, R., Ohms, C., Reiser, J., Rieth, M., & Wimpory, R. C. (2015). Neutron diffraction stress determination in W-laminates for structural divertor applications. Nuclear Materials and Energy, 3-4, 37 - 42. https://doi.org/10.1016/j.nme.2015.07.001