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Small-angle neutron scattering from CuCrZr coupons and components.

F Schoofs1, S King2, A J Cackett1

  • 1United Kingdom Atomic Energy Authority, Culham Science Centre, Abingdon OX14 3DB, United Kingdom.

Journal of Applied Crystallography
|October 20, 2021
PubMed
Summary

Small-angle neutron scattering (SANS) effectively analyzed copper-chromium-zirconium (CuCrZr) fusion reactor components. This method confirmed manufacturing and testing had minimal impact on microstructural properties.

Keywords:
CuCrZrSANSalloyssmall-angle neutron scattering

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Area of Science:

  • Materials Science
  • Nuclear Engineering
  • Neutron Scattering Physics

Background:

  • Fusion reactor components require robust materials like CuCrZr.
  • Understanding the microstructure of CuCrZr is crucial for component integrity.
  • Microscopic techniques provide detailed but localized microstructural data.

Purpose of the Study:

  • To analyze the microstructural state of CuCrZr material using SANS.
  • To evaluate the impact of heat treatments and manufacturing processes on CuCrZr.
  • To assess the effects of high-heat-flux exposure on fusion reactor components.

Main Methods:

  • Small-angle neutron scattering (SANS) was employed for microstructural analysis.
  • CuCrZr samples included reference material, manufacturing mock-ups, and heat-flux-exposed mock-ups.
  • Data was collected at a millimetre scale with minimal surface preparation.

Main Results:

  • SANS data correlated well with existing microscopic-scale characterization data.
  • Manufacturing methods and high-heat-flux testing showed minimal influence on microstructural properties.
  • The study validated the suitability of current treatments for scaled-up reactor components.

Conclusions:

  • SANS is a viable technique for millimetre-scale microstructural analysis of CuCrZr.
  • The microstructural integrity of CuCrZr is maintained through controlled manufacturing and testing.
  • Findings support the use of CuCrZr in demanding fusion reactor environments.