Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7963697 | Journal of Nuclear Materials | 2016 | 7 Pages |
Abstract
Here, a coordinated investigation of the elemental composition and morphology of ultra-fine-scale nanoparticles as a function of size within a variety of austenitic oxide dispersion-strengthened (ODS) steels is reported. Atom probe tomography was utilized to evaluate the elemental composition of these nanoparticles. Meanwhile, the crystal structures and orientation relationships were determined by high-resolution transmission electron microscopy. The nanoparticles with sufficient size (>4Â nm) to maintain a Y2Ti2âxO7â2x stoichiometry were found to have a pyrochlore structure, whereas smaller YxTiyOz nanoparticles lacked a well-defined structure. The size-dependent characteristics of the nanoparticles in austenitic ODS steels differ from those in ferritic/martensitic ODS steels.
Keywords
Related Topics
Physical Sciences and Engineering
Energy
Nuclear Energy and Engineering
Authors
Yinbin Miao, Kun Mo, Zhangjian Zhou, Xiang Liu, Kuan-Che Lan, Guangming Zhang, Michael K. Miller, Kathy A. Powers, James F. Stubbins,