Designing Radiation Resistance in Materials for Fusion Energy*

  • Granberg F
  • Nordlund K
  • Ullah M
 et al. 
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Abstract

Proposed fusion and advanced (Generation IV) fission energy systems require high-performance materials capable of satisfactory operation up to neutron damage levels approaching 200 atomic displacements per atom with large amounts of transmutant hydrogen and helium isotopes. After a brief overview of fusion reactor concepts and radiation effects phenomena in structural and functional (nonstructural) materials, three fundamental options for designing radiation resistance are outlined: Utilize matrix phases with inherent radiation tolerance, select materials in which vacancies are immobile at the design operating temperatures, or engineer materials with high sink densities for point defect recombination. Environmental and safety considerations impose several additional restrictions on potential materials systems, but reduced-activation ferritic/martensitic steels (including thermomechanically treated and oxide dispersion–strengthened options) and silicon carbide ceramic composites emerge as robust structural...

Author-supplied keywords

  • Concentrated solid solution alloys
  • Defects
  • Radiation
  • Transmission electron microscopy
  • concentrated solid solution alloys
  • displacement damage
  • fission reactors
  • fusion reactors
  • neutron irradiation
  • structural materials

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Authors

  • F. Granberg

  • K. Nordlund

  • Mohammad W. Ullah

  • K. Ke Jin

  • C. Lu

  • Hongbin Bei

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