| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Symposium
|
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Multi-laser Diode Area Melting of Ti6Al4V: A Novel Alternative Approach to Traditional Laser Powder Bed Fusion |
| Author(s) |
Mohammed Alsaddah, Kristian Groom, Kamran Mumtaz |
| On-Site Speaker (Planned) |
Mohammed Alsaddah |
| Abstract Scope |
Laser Powder Bed Fusion (LPBF) selectively melts thin layers of metallic powder. The process depends on a high-power fibre laser at a wavelength of 1060nm using a galvo scanning system to create 3D complex parts. However, this method presents related challenges, such as scalability, processing efficiency (due to poor radiation absorption and wall-plug efficiency), and high thermal gradient due to rapid solidification. An alternative approach has been developed called Diode Area Melting (DAM) offers better process efficiency, scalability and controllable thermal gradient (lower cooling rate) during the process by incorporating several individually controllable, low-power (4.5W) with a short wavelength (808nm) using fibre-coupled diodes lasers into a single laser head traversing over the powder bed. This work demonstrates the potential of using DAM to process Ti6Al4V material by employing multiple lasers with different beam profiles to improve the process efficiency, mechanical properties, and microstructure of the final parts. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |