| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Nano and Micro Additive Manufacturing
|
| Presentation Title |
Ultrafast Bubble Dynamics in Metal Additive Manufacturing with Operando Nanoscale Transmission X-Ray Microscopy |
| Author(s) |
Lichao Fang, Zane Taylor, Tharun Reddy, Matt Seaberg, Matthieu Chollet, Tim van Driel, Adrian Lew, Leora Dresselhaus-Marais |
| On-Site Speaker (Planned) |
Lichao Fang |
| Abstract Scope |
Pores and defects existing in the metal 3D-printed parts limit the wide application of metal additive manufacturing (AM). The keyhole dynamics and bubble formation are unclear due to the complex competing physics between heat transfer, fluid flow, evaporation, phase change, and solidification in the metal additive manufacturing process. Current operando X-ray imaging resolution limits the discovery of new physics in laser-based metal additive manufacturing’s melting and solidification – hindering observation of the smallest pore formation mechanisms. We have developed in situ and operando ultrafast transmission X-ray microcopy (TXM) able to achieve ~500-nm resolution with GHz sampling. In this talk, we will describe our results revealing laser-metal interaction and bubble formation mechanisms previously not observed. These and other novel bubble generation mechanisms measurable with our novel technique will guide the design of metal additive manufacturing. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Other |