| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Materials Design and Alloy Development II
|
| Presentation Title |
Feedstock Material Composition Modifications for Improved Processability by Laser Powder-bed Fusion: A Case Study on Aluminium |
| Author(s) |
Nesma T. Aboulkhair, Marco Simonelli, Ehab Salama, Graham Rance, Nigel Neate, Christopher Tuck, Amal M. K. Esawi, Richard J. M. Hague |
| On-Site Speaker (Planned) |
Nesma T. Aboulkhair |
| Abstract Scope |
The interest in metal additive manufacturing by laser powder-bed fusion (L-PBF) is ever-growing, with the amount of work done on processing aluminium alloys increasing exponentially. However, the work on pure aluminium is quite limited since the material was shown to be difficult-to-process by L-PBF for its relatively high reflectivity in the range of wavelengths used in the process. In this work, we are proposing an approach to improve the material’s processability by adding multi-walled carbon nanotubes to the Al feedstock and benefit from their high laser absorptivity. Besides improving the processability, a range of reinforcements formed in the produced material that were studied using a range of microstructural and mechanical characterisation techniques. The powder feedstock was prepared using various approaches (simple mixing, satelliting, and high energy ball milling) to investigate the role of the mixing technique on the quality and properties of the fabricated parts. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |