Neutron diffraction stress determination in W-laminates for structural divertor applications

R. Coppola, C. Ohms, J. Reiser, M. Rieth, R.C. Wimpory

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2 Citations (Scopus)

Abstract

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.
Original languageEnglish
Pages (from-to)37 - 42
Number of pages6
JournalNuclear Materials and Energy
Volume3-4
DOIs
Publication statusPublished - 1 Jul 2015
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Materials Science (miscellaneous)
  • Nuclear Energy and Engineering

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