| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Refractory Metallic Materials
|
| Presentation Title |
Atomization and Additive Manufacturing of Refractory Alloys |
| Author(s) |
Jennifer Glerum, Catherine Ott, Ian Mccue |
| On-Site Speaker (Planned) |
Jennifer Glerum |
| Abstract Scope |
Most additive manufacturing techniques, such as laser-powder bed fusion, are carried out with pre-alloyed powders, ensuring a homogeneous microstructure in the resulting part. However, there are only a handful of off-the-shelf alloy compositions, and custom alloy powder feedstock is difficult to acquire from vendors. Reports in the literature demonstrate it is possible to fabricate bulk parts with homogeneous microstructures from elemental powder blends. However, this approach cannot be extended to all alloy compositions, such as high-melting point refractory alloys. In this talk, we detail a case study comparing the quality of additively manufactured refractory alloys made via (i) elemental powder blends and (ii) in-house electrode induction melting inert gas atomization of pre-alloyed rods. Our study demonstrates tradeoffs between optimized printing parameters, which are necessary to fabricate fully-dense bulk builds, and loss of elements during printing, leading to substantial local variations in composition. Density, microstructure and mechanical properties are also presented. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, High-Temperature Materials, Characterization |