Abstract
Radiation-induced swelling due to void formation, found in most materials after exposure to the high temperatures (400-750 C) and fluences (1022-1033 neutrons/cm2 having energies >MeV) of a liquid-metal fast-breeder reactor, is often studied on a laboratory time scale in specimens bombarded with electrons or with energetic ions. The voids, along with dense arrays of dislocations, arise by selective agglomeration of thermally mobile point-defects (vacancies and interstitials) created by any radiation sufficiently energetic to displace atoms from crystal lattice sites. Both of these simulation methods produce voids that are distributed non-uniformly in depth within a few ym of the bombarded surface, so that careful sectioning or analysis is required to relate the observed defect structures to the swelling characteristic of bulk material.
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Schedule a callMore From: Proceedings, annual meeting, Electron Microscopy Society of America
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