Self-organization reactions under irradiation: Toward the design of radiation-resistant materials

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Irradiation can drive materials into non-equilibrium states, inducing phase transformations, and nanoscale structuration through self-organization. These nanostructures could impart radiation resistance by providing a large density of interfacial sites for point defect elimination, while at the same time improving mechanical properties. Two approaches are considered for alloys comprised of immiscible elements. In a first approach, for instance observed in Cu-Nb-W, nanoprecipitation of a highly immiscible solute (W in Cu) takes place during displacement cascade, providing a fractal-like template for the precipitation of a second and less immiscible solute (Nb). Atomistic kinetic Monte Carlo (KMC) simulations reveal that, under these conditions, nanoprecipitates can be completely resistant to thermal coarsening. In a second approach, the competition of ballistic mixing with thermal diffusion leads to self-organized nanoprecipitates with a finite steady-state lengthscale, which are thus coarsening resistant by design. KMC reveal that effective point-defect sinks can extend this nanopatterning to elevated temperatures.

Original languageEnglish (US)
Title of host publicationPTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015
EditorsLong-Qing Chen, Matthias Militzer, Gianluigi Botton, James Howe, Chadwick Sinclair, Hatem Zurob
PublisherInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015
Pages873-874
Number of pages2
ISBN (Electronic)9780692437360
StatePublished - Jan 1 2015
EventInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015, PTM 2015 - Whistler, Canada
Duration: Jun 28 2015Jul 3 2015

Publication series

NamePTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015

Other

OtherInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015, PTM 2015
CountryCanada
CityWhistler
Period6/28/157/3/15

Keywords

  • Coarsening
  • Irradiation
  • Nano-precipitation
  • Self-organization

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Inorganic Chemistry
  • Materials Chemistry
  • Metals and Alloys

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  • Cite this

    Bellon, P., & Averback, R. S. (2015). Self-organization reactions under irradiation: Toward the design of radiation-resistant materials. In L-Q. Chen, M. Militzer, G. Botton, J. Howe, C. Sinclair, & H. Zurob (Eds.), PTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015 (pp. 873-874). (PTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015). International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015.