University of Birmingham > Talks@bham > School of Metallurgy and Materials Colloquia > Non-equilibrium defects in irradiated metals

Non-equilibrium defects in irradiated metals

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Structural nuclear materials are constantly driven out of equilibrium by irradiation in service. In this talk I will discuss two important examples: 1) the formation of void superlattices, and 2) dislocation climb mediated by self-interstitial atoms rather than vacancies. 1) is a novel manifestation of a Turing instability in the solid state, resulting in remarkably stable self-organised nanostructures, which potentially offer a beneficial means to sequester insoluble fission products such as Kr and Xe safely away from grain boundaries. On the other hand, 2) could have drastic negative consequences for particle-reinforced alloys such as ODS steels, which would not be detectable in (equilibrium) post-irradiation mechanical tests.

This talk is part of the School of Metallurgy and Materials Colloquia series.

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