|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Nanostructured Materials for Nuclear Applications
||Characterization of Nuclear Materials Using Combined TEM and Atom Probe Tomography
||Peter Wells, Stephan Kraemer, Yuan Wu, Soupitak Pal, Takuya Yamamoto, G. Robert Odette
|On-Site Speaker (Planned)
Characterization of nm-scale features is necessary to understand materials degradation in nuclear service, as well as for developing more radiation tolerant alloys. 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 correlative combination of APT and TEM tomography on the same sample volumes. Data is presented for tempered martensitic steels containing He bubbles and voids, reactor pressure vessel steels containing nm-scale Cu-Mn-Ni-Si precipitates and nanostructured ferritic alloys containing nano Y-Ti-O oxide precipitates, and precipitate associated bubbles. The correlative combination of these methods provides unique information and understanding of nanostructures and their associations. This combination also shows the potential limitations of the individual techniques.
||Planned: A print-only volume