About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Neutron and X-ray Scattering in Materials Science
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Presentation Title |
L-68: Quantification of Nanoscale Precipitation in Al Using SAXS and Electron Microscopy-based Automatic Particle Counting Software Techniques |
Author(s) |
Alyssa Stubbers, Ning Zhu, Luke N. Brewer, Anthony Naccarelli, Timothy Eden, John Balk |
On-Site Speaker (Planned) |
Alyssa Stubbers |
Abstract Scope |
Quantification of precipitate size distributions in Zn-containing Al alloys is challenging due to limited precipitate size (< 20 nm) and dense precipitate fields. Manual microscopy methods are time consuming and have difficulty identifying individual precipitates for measurement in large precipitate fields. Small angle x-ray scattering (SAXS) provides an alternative pathway for analysis of precipitate sizes, spacing, and volume fraction data that can provide insight on precipitate structures and how they relate to mechanical properties of the material. This work evaluates SAXS as a complement and to TEM particle measurement techniques, and highlights challenges of this technique compared to conventional microscopy characterization. This comparison is applied to AA7050-T7451 material heat treated over a range of times and temperatures. Evaluation of TEM-based automatic particle counting software as a comparable method to scattering is also considered. The analyses from each technique will be compared and contrasted, with a discussion of their relative merits. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Aluminum, |