Abstract.
The present work takes place in the framework of the European Spallation Source target research and development program. A wide spectrum of miniaturized, mechanical test specimens of different structural materials were placed into the SINQ target (Paul Scherrer Institute, Villigen, Switzerland) for post-irradiation investigations, including evaluation of the stress fields produced by irradiation using neutron-diffraction techniques. The measurements on irradiated specimens are planned at SINQ using a new diffractometer designed for this purpose. This paper presents initial stress measurements performed at ISIS (Chilton-Didcot, England) and ILL (Grenoble, France) on specimens which were not irradiated, in order to provide the reference residual stress states and validate the experimental procedure. Both experiments give evidence of a tensile stress state around the weld in electron-beam-welded specimens, while the presence of a crack does not seem to introduce high residual stresses into the center of the weld.
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Received: 18 July 2001 / Accepted: 11 December 2001
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Turquier, F., Levy-Tubiana, R., Pirling, T. et al. Residual stress states before irradiation in ESS target structural materials . Appl Phys A 74 (Suppl 1), s1197–s1199 (2002). https://doi.org/10.1007/s003390201552
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DOI: https://doi.org/10.1007/s003390201552