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.
COPPOLA Roberto;
OHMS Carsten;
REISER Jens;
RIETH Michael;
WIMPORY Robert Charles;
2015-12-10
Elsevier B.V.
JRC97206
2352-1791,
http://www.sciencedirect.com/science/article/pii/S2352179115300065,
https://publications.jrc.ec.europa.eu/repository/handle/JRC97206,
10.1016/j.nme.2015.07.001,
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