About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
In-Situ Monitoring and Control of Solidification & Deformation Processes in Metal Additive Manufacturing
|
| Presentation Title |
Sub-Surface Temperature Evolution Mapping During Laser Powder Bed Fusion via In-Situ XRD |
| Author(s) |
Junye Huang, Andrew Chihpin Chuang, Jiandong Yuan, Minglei Qu, Qingyuan Li, Lianyi Chen |
| On-Site Speaker (Planned) |
Junye Huang |
| Abstract Scope |
The thermal evolution beneath the surface of the melt pool during laser powder bed fusion (LPBF) significantly affects the solidification process, plays a vital role in microstructure development, and further influences mechanical properties of the additively manufactured (AM) parts. However, it is impossible to reveal the transient thermal evolution by the postmortem analysis. Even though multiple in-situ characterization methods have been developed previously to measure temperature, probing sub-surface temperature evolution is still a challenge. In this study, a method using nano temperature probe (stable nanoparticles embedded in metal matrix) is proposed to acquire important temperature information during melting-solidification process in LPBF process. The variation of lattice parameters of nanoparticles captured by in-situ XRD reveals temporal temperature change. With embedding nano temperature probes at different locations in the material and aiming the incoming x-ray correspondingly, spatial temperature mapping beneath the surface of the melt pool can be achieved. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Aluminum |