About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Frontiers in Solidification: An MPMD Symposium Honoring Jonathan A. Dantzig
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Presentation Title |
In Situ X-ray Tomographic Investigations of Dendritic Patterns in a Co-base Alloy during Solidification |
Author(s) |
Mohammed Abdul Azeem, Tim Wigger, Andrew Kao, Nghia Vo, Robert C Atwood, Peter D Lee |
On-Site Speaker (Planned) |
Mohammed Abdul Azeem |
Abstract Scope |
Co base superalloys and other non-Ni base superalloys are being actively explored for future high efficiency gas turbines in aerospace sector. In both Co and Ni base systems, there is currently lack of morphological information on the formation and evolution of dendritic patterns during solidification. Here we have obtained a time resolved three-dimensional (4D) data of the evolution of α-Co dendritic patterns during solidification using in situ synchrotron X-ray imaging. A parallel decentred octahedral cellular automata solidification code is used to comprehensively quantify, verify and calibrate analytical and numerical coarsening models and dendrite growth simulations, thus enabling predictions for casting applications. Coarse and thick dendritic patterns are observed during slow cooling while fine and thin patterns are observed at fast cooling rates. The development of porosity in the eutectic phase is captured and quantified to assess the defect formation under varying thermal conditions. |
Proceedings Inclusion? |
Planned: |
Keywords |
Solidification, Characterization, Phase Transformations |