About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
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Symposium
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Additive Manufacturing: Process-induced Microstructures and Defects
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Presentation Title |
Comparing and Optimising Continuous Wave and Pulsed Width Modulation Mode Laser Powder Bed Fusion Parameters for Ti-6Al-4V |
Author(s) |
Elena Ruckh, Samy Hocine, Sebastian Marussi, Andy Farndell, Ruben Lambert-Garcia, Maureen Fitzpatrick, Anna Getley, Caterina Iantaffi, Saurabh Shah, Marta Majkut, Alexander Rack, Nick Jones, Peter D. Lee , Chu Lun Alex Leung |
On-Site Speaker (Planned) |
Elena Ruckh |
Abstract Scope |
Laser Powder Bed Fusion (LPBF) has emerged as a pivotal additive manufacturing technique, enabling the production of high-quality metal components. In this investigation, we focus on characterising and optimising LPBF process parameters for Ti6Al4V, a widely utilised alloy in various industries including medical, automotive, aerospace, and space. We explore the influence of scan speed and laser power as well as two operational modes: Continuous Wave (CW) and Pulse Width Modulation (PWM). Using ultra-high-speed synchrotron radiography, coaxial high-speed optical camera, and photodiode measurements we quantify melt pool dynamics, feature formation, and track geometry to generate process maps. These results are applied to help optimise LPBF parameters and minimise pores and lack of fusion defects. The insights gained from this study contribute to enhancing the processability and application specific performance of Ti6Al4V components fabricated via LPBF, whether in CW or PWM mode. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Titanium, Solidification |