About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Field-Assisted Material Processing and Solidification
|
| Presentation Title |
Grain refinement mechanisms in ultrasound-assisted directed energy deposition additive manufacturing |
| Author(s) |
Harry Edward Chapman, Xianqiang Fan, Ivars Krastins, Catherine Tonry, Soumya Dash, Martyn Jones, Alexander Rack, Samuel Clark, Andrew Kao, Chu Lun Alex Leung, Peter Lee |
| On-Site Speaker (Planned) |
Harry Edward Chapman |
| Abstract Scope |
Directed Energy Deposition (DED) additive manufacturing is utilised in the aerospace industry for manufacturing and repairing components. Aerospace components manufactured via DED require high strength-to-weight ratios, leading to a need to optimise the microstructure of metallic parts for high performance. Applying ultrasonic fields (US) to DED has been shown to produce a refined grain structure in a variety of materials, increasing mechanical properties. However, the driving mechanisms behind these effects are unclear. In this work, we conducted US-assisted DED of AlSi10Mg and obtain a 3x reduction in grain size. Using in situ synchrotron radiography, we observe the US impact on the melt pool dynamics and hypothesise driving mechanisms for the resulting microstructural refinement. We couple our in situ observations with multi-physics modelling to develop a more complete understanding of these phenomena for industrial applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Other, Other |