| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Refractory Metallic Materials
|
| Presentation Title |
Additive Manufacturing and High-Temperature Mechanical Behavior
of High-Performance Refractory Alloys |
| Author(s) |
Gianna M. Valentino, Eliott Wallace, Alex Lark, Robert Mueller |
| On-Site Speaker (Planned) |
Gianna M. Valentino |
| Abstract Scope |
Refractory metals and alloys are well-known for their high-temperature performance in structural applications, particularly propulsion systems. Traditional powder metallurgy has been effective, but metal additive manufacturing (AM) offers the potential to create unique geometries and reduce costs compared to traditional subtractive methods. In this study, we develop AM laser parameters for key alloys (e.g., C103, Ta-W, W-Re), characterize their microstructures, and measure their high-temperature tensile properties to elucidate the processing-structure-property relationships in AM refractories. We design sub-scale tensile geometries specifically for laser-powder bed fusion and powder-blown directed energy deposition to evaluate the tensile behavior up to 2000ºC. For W-Re alloys, post-processing is crucial to mitigate as-built microcracking. Ongoing electron microscopy studies are examining the effects of grain size and recrystallization on the W-Re mechanical response under different post-processing conditions. These findings will be presented to highlight advancements in the AM of high-performance refractory alloys. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Additive Manufacturing, Mechanical Properties |