About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
In-Situ Monitoring and Control of Solidification & Deformation Processes in Metal Additive Manufacturing
|
| Presentation Title |
F-57: Dynamics of Intermetallic Phase Formation During Additive Manufacturing of Functionally Graded Aluminium-Titanium |
| Author(s) |
Xianqiang Fan, Harry Chapman, Da Guo, Yuhan Wang, Sebastian Marussi, Stefan Michalik, Robert Atwood, Alexandar Rack, Chu Lun Alex Leung, Peter D. Lee |
| On-Site Speaker (Planned) |
Xianqiang Fan |
| Abstract Scope |
Additive manufacturing (AM) is well-suited for producing functionally graded materials (FGM) required for aerospace components that endure extreme environments. However, intermetallics may form in the interface region, reducing mechanical properties, leading to overdesign and hence reduced efficiency. The extent and morphology of intermetallic formation depends on the AM process parameters. A key factor is the cooling rate, which can vary across a component, leading to location specific intermetallic morphology. This study investigates the impact of the variation in cooling rate on the resulting microstructure in an Al/Ti bimetallic system, using in situ synchrotron X-ray imaging and diffraction, and correlative thermal imaging. At high cooling rates, formation of large-scale intermetallic phase is inhibited. At slower cooling rates, intermetallics growth is less suppressed, resulting in coarser intermetallic morphologies. These findings highlight the importance of controlling cooling rates to achieve more homogeneous microstructures formation during additive manufacturing of FGM. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Aluminum, Solidification |