About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Refractory Metallic Materials
|
| Presentation Title |
Computationally designed refractory metal alloys for additive manufacturing |
| Author(s) |
Priyanka Agrawal, Amit Kumar Singh, Prithvi Dev Awasthi, Sarah McDearis, Rajiv S Mishra |
| On-Site Speaker (Planned) |
Priyanka Agrawal |
| Abstract Scope |
Additive manufacturing (AM) of refractory tungsten (W) alloys has been limited by their high melting point, brittleness, and poor printability. With the growing demand for refractory metals in high-temperature and extreme environments, laser powder bed fusion (L-PBF) AM offers a promising route to fabricate W-based components, provided crack-free, dense alloys can be designed. This study presents a computational–experimental methodology to develop novel W-alloy optimized for L-PBF AM by integrating CALPHAD and heat transfer–material flow simulations to design W–Cr–C alloy to achieve improved printability. The printed material exhibits superior compressive strength of 1344 MPa and hardness of 550–750 HV, attributed to good printability and carbide formation. Further heat-treatments lead to tailored microstructure and enhanced strength-ductility synergy of L-PBF AM printed W-alloy, leveraging spinodal decomposition. This approach demonstrates a pathway for designing refractory alloys suitable for AM and for targeted applications (funded by NASA #80NSSC21M0273, POC Dr. Fredrick Michael). |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, ICME, Mechanical Properties |