journal article·2016-06Open access

The crystal structure, orientation relationships and interfaces of the nanoscale oxides in nanostructured ferritic alloys

Yuan Wu, Jim Ciston, Stephan Kräemer, Nathan Bailey, G. Robert Odette, Peter Hosemann

Acta Materialia· Volume 111

Abstract

Abstract The capability of nanostructured ferritic alloys (NFAs) to manage high levels of transmutation product helium will help resolve one of the grand challenges to transforming the promise of C-free fusion energy into a reality. NFAs are dispersion strengthened by an ultrahigh density of Y-Ti-O nano-oxides (NOs), which result in both high strength and temperature limits, as well as unique irradiation tolerance. Here, aberration-corrected high-resolution transmission electron microscopy was used to characterize the NOs in four NFA conditions, including following severe deformation and extreme neutron radiation exposure. Fast Fourier Transform analysis of focal series images revealed the NO crystal structure, including the smallest at
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Research context

OpenAlex topics: Fusion materials and technologies · Nuclear Materials and Properties · Nuclear materials and radiation effects

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