| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials Processing and Fundamental Understanding
|
| Presentation Title |
X-ray Synchrotron Imaging of Laser Melted Ti-6Al-4V Powders with Varying Oxygen Content, Powder Size Distributions, and Gaseous Environments |
| Author(s) |
Nicholas A. Derimow, Orion L. Kafka, Samuel J. Clark, Jake T. Benzing, Ed Garboczi, Nik Hrabe |
| On-Site Speaker (Planned) |
Nicholas A. Derimow |
| Abstract Scope |
Titanium alloy (Ti-6Al-4V) is widely used in the biomedical and aerospace industries for its high strength-to-weight ratio and good corrosion resistance. However, as laser powder-bed fusion (PBF-L) additive manufacturing (AM) advances towards reliable production of titanium parts, it has yet to be fully realized for fracture critical applications due to an incomplete understanding of the processing-structure-properties-performance relationships (PSPP). To understand the PSPP relationships in titanium PBF-L, a study of the laser melting was paired with high-speed X-ray synchrotron imaging (beamline: 32-ID APS). Simultaneous melting and imaging was carried out on both grades of Ti-6Al-4V (Grades 5 and 23) at different power levels, powder size distributions, and gaseous environments (Ar and He) atop AM Ti-6Al-4V baseplates. Geometrical representations of the differing melt pool dynamics will be discussed. Ex situ, postmortem microstructural analysis of the fusion and heat affected zones between the melted powder and base metal will also be presented. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Titanium, Characterization |