About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Refractory Metallic Materials
|
| Presentation Title |
Microstructural Evolution and Mechanical Properties of Additively Manufactured W-Ta Alloys |
| Author(s) |
Guru P. Dinda, Raden Gustinvil |
| On-Site Speaker (Planned) |
Guru P. Dinda |
| Abstract Scope |
Tantalum-tungsten alloys exhibit excellent combination of mechanical properties and corrosion resistance from low to elevated temperatures and found applications in high-temperature engine components, heat exchangers, crucibles, and spacecraft structural parts. This paper systematically investigates the effect of W concentration on the microstructural development and mechanical behavior of a series of Ta-W alloys produced by laser powder bed fusion (L-PBF) and laser directed energy deposition (L-DED) processes. High-density (>99.8%) and crack-free Ta-2.5W, Ta-5W, Ta-7.5W, and Ta-10W have been successfully deposited by in-situ alloying starting with elemental powder by both L-PBF and L-DED processes. The lattice parameters, crystallographic texture, and microstructural development were investigated using X-ray diffraction, scanning electron microscopy, and electron backscatter diffraction techniques. Mechanical properties of the as-deposited and hot isostatically pressed specimens were evaluated by microhardness and tensile tests. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, High-Temperature Materials, Mechanical Properties |