About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Frontiers in Solidification: An MPMD Symposium Honoring Jonathan A. Dantzig
|
Presentation Title |
Measuring Key Phenomena in Solidification Using X-ray Imaging |
Author(s) |
Insung Han, Shikang Feng, Enzo Liotti, Patrick S. Grant |
On-Site Speaker (Planned) |
Patrick S. Grant |
Abstract Scope |
X-ray radiography and tomography have been applied widely to investigate the morphological evolution and microstructural instability of pre-existing solid crystals in metal alloys. Solute partitioning between solid and liquid phases has also been resolved for binary alloys, and algorithms are increasingly applied to quantify semi-automatically large image data sets. But little attention has been paid to crystal formation from the liquid behaviour, or to critical phenomena in the residual liquid such as macroscopic flow, macrosegregation, shrinkage and defect formation.
This paper presents latest experimental results of the X-ray imaging and quantification of (i) crystal formation behaviour at the beginning of solidification and (ii) flow behaviour and defect formation in the final stages. A range of novel approaches are described that allow dynamic behaviour, including in the liquid, to be quantified. The agreement or otherwise of experiment with theory and modelling is described, along with challenges for future work. |
Proceedings Inclusion? |
Planned: |
Keywords |
Solidification, Characterization, Aluminum |