About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Frontiers in Solidification X
|
| Presentation Title |
Mechanisms for the formation of solute channels during dendritic solidification of Single Crystal Nickel Superalloys |
| Author(s) |
Peter Soar, Ivars Krastins, Matthaios Alexandrakis, Paul Brown, Owen Draper, Nick Green, Andrew Kao |
| On-Site Speaker (Planned) |
Peter Soar |
| Abstract Scope |
The unwanted formation of solute channels during the solidification of metal alloys can lead to undesirable microstructural features such as freckles, especially in the case of single crystal Nickel superalloys where there is strong buoyancy induced fluid flow during solidification and any discontinuity introduced in the final microstructure can be highly detrimental to the properties of the final cast part. Despite this the fundamental mechanisms causing these solute channels to form remain poorly understood, making them a challenge to entirely prevent in some manufacturing processes. This work proposes to explore which solidification conditions play a role in initiating and stabilising solute channels by performing a numerical modelling study utilising a Cellular Automata dendritic solidification code which includes buoyancy driven fluid flow and utilises parallel computing to simulate industrially relevant scales. Where possible reference to observed experimental results will be presented to support the results obtained using the modelling. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Solidification, Modeling and Simulation, High-Temperature Materials |