|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Hume-Rothery Award Symposium: Alloy Phase Chemistry at the Atomic Level - Opportunities and Challenges
||Unique Insights from the Correlated Combination of Atom Probe and Electron Tomography
||Peter Wells, Stephan Krämer, Christian Oberdorfer, Soupitak Pal, Yuan Wu, Takuya Yamamoto, G. Robert Odette
|On-Site Speaker (Planned)
Fusion reactors will require development of new alloys that can withstand extreme environments, including high temperatures and neutron displacement damage, and must also manage large amounts of He generated in neutron-alpha reactions. These challenging service conditions lead to microstructure changes on the nano-scale, such as precipitation or He bubble/void formation, that are often times at the limit of characterization techniques. Atom probe tomography (APT) provides high resolution compositional measurements that track changes in solute locations, such as precipitation and segregation, in what are intrinsically 3D tomographic reconstructions. TEM provides other information, such as crystal structures, and probes larger sampling volumes, but often only in 2D projections. Here we report on insight gained using a combination of APT and TEM tomography on the same sample volumes. The correlation of these methods not only provides unique understanding regarding nm-scale features and their associations, but also highlights artifacts associated with the individual techniques.
||Planned: Supplemental Proceedings volume