| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Late News Poster Session
|
| Presentation Title |
A-74: Powder Particle Impact and Pore Release Behavior in Laser, Powder-blown Directed Energy Deposition |
| Author(s) |
Samantha Webster, Shuheng Liao, Sanjana Subramaniam, Jihoon Jeong, Anchen Tong, Rujing Zha, Jian Cao |
| On-Site Speaker (Planned) |
Samantha Webster |
| Abstract Scope |
Process defects currently limit the use of additive manufacturing (AM) components in industry due to shorter fatigue life, potential for catastrophic failure, and lower strength. Conditions under which these defects form, and their mechanisms, are starting to be analyzed through in-situ, high-speed X-ray imaging of both laser powder bed fusion (LPBF) and directed energy deposition (DED). It is evident that the melt pool surface in powder blown DED will exhibit very dynamic behavior due to stochastic, violent powder delivery. In this study, highspeed X-ray imaging at the Advanced Photon Source was utilized in conjunction with a high through-put DED set-up to observe particle impact behavior and pore release at the melt pool surface. Initial observations of these phenomena and their potential implications on build quality will be presented. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Additive Manufacturing, Titanium, |