About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Fatigue and Fracture
|
| Presentation Title |
On the Structural Integrity of AlSi40 Alloy Processed by Laser-Based Powder Bed Fusion |
| Author(s) |
Thomas Wegener, Thomas Niendorf, Johannes Günther |
| On-Site Speaker (Planned) |
Thomas Wegener |
| Abstract Scope |
Hypereutectic aluminum-silicon alloys are well known for their low coefficient of thermal expansion (CTE) and high wear resistance, making them promising candidates for thermally stable components in aerospace and precision engineering. In recent years, additive manufacturing (AM) - particularly laser-based powder bed fusion (PBF-LB) - has expanded the processing capabilities for these alloys, which were traditionally limited to established methods such as spray deposition and casting. However, ensuring the structural integrity of these materials remains a significant challenge due to the unique processing conditions in AM, including rapid solidification, high thermal gradients, defect formation, and residual stress development.
This talk presents recent advancements in understanding the process–microstructure–property relationships of the low-CTE AlSi40 alloy processed via PBF-LB. The results are compared to conventionally manufactured counterparts and discussed based on microstructural investigations using advanced characterization techniques, providing novel insights into the structural integrity of the alloy in focus. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Aluminum, Mechanical Properties |