On the status and prospects for nanostructured ferritic alloys for nuclear fission and fusion application with emphasis on the underlying science

Abstract

The status of nanostructured ferritic alloys (NFAs) is summarized. The science underlying NFAs has emerged as a remarkably comprehensive and high quality body of research. The sequence of events and composition-processing paths needed to form and sustain the performance enabling nano-oxides are well established. The nano-oxides are predominantly Y2Ti2O7 pyrochlore, and their role in providing outstanding mechanical properties and unique irradiation tolerance is described. Notably, however, producing defect-free NFA components remains a work in progress. The paper argues that the costs and supply of NFAs will be consistent with its selective application to advanced fission and fusion reactors.