About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
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Additive Manufacturing of Refractory Metallic Materials
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| Presentation Title |
Microstructure and Mechanical Properties of Laser Powder Bed Fusion Processed FS-85 Alloy |
| Author(s) |
Advika Chesetti, Tirthesh Ingale, Sarang Saji, Shanmukha Guraja, Narendra B Dahotre, Rajarshi Banerjee |
| On-Site Speaker (Planned) |
Advika Chesetti |
| Abstract Scope |
Refractory metals are attractive candidates for high temperature structural applications, and with the advent of additive manufacturing (AM), there is renewed thrust towards the fabrication of refractory metal alloys via fusion-based approaches. However, the inherent far-from equilibrium thermo-kinetic conditions of AM processing present challenges. This study focuses on AM processing of a solid solution strengthened Nb-based FS85 alloy (Nb-28Ta-10W-1Zr wt%) using the LPBF technique, as well as post-AM processing effects. The influence of the substructure and zirconium oxides on the mechanical properties in LPBF printed, stress-relieved, and HIP’ed conditions are assessed. The results indicate that as-printed FS-85 is brittle at room temperature under tension but demonstrates high yield strength (~480-500 MPa) with total elongation until fracture ranging between 13-24 % upon alleviating residual stress. These insights help in further optimizing the post-deposition processing steps resulting in a more favorable combination of tensile strengths and tensile ductility. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, High-Temperature Materials, Characterization |