On the analysis of radiation-induced segregation at ion-irradiated grain boundaries
Source abstract
Abstract
Radiation-induced segregation has been extensively studied in alloys irradiated with neutrons and charged particles (protons and ions). Unlike neutrons and protons, heavy ions have a very short penetration depth (typically a few micrometers), and for this reason, the free surface and end-of-range region can significantly affect radiation-induced microstructural changes. These effects are well-documented for void swelling and dislocation loops; however, they are much less so for radiation-induced segregation at grain boundaries. To address this gap, a model Fe–Ni–Cr alloy was irradiated using Fe ions and grain boundary chemistry was quantified as a function of depth and dose. The impacts of surface oxidation and grain boundary diffusion on radiation-induced segregation are discussed.
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Research context
OpenAlex topics: Fusion materials and technologies · Ion-surface interactions and analysis · Microstructure and mechanical properties
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References (44)
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