About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing of Refractory Metallic Materials
|
Presentation Title |
Laser Additive Manufacturing of Tungsten-Rhenium Alloys |
Author(s) |
Guru P. Dinda |
On-Site Speaker (Planned) |
Guru P. Dinda |
Abstract Scope |
Tungsten is a refractory metal with a unique combination of properties including the highest melting point among all metallic elements, high thermal conductivity, and excellent mechanical properties at elevated temperatures. However, additive manufacturing of pure tungsten was not successful due to its high brittle-ductile transition temperature. It has been identified that the addition of rhenium to tungsten reduces the Peierls stress and also fosters the operation of {112} slip planes during plastic deformation that leads to the enhancement of ductility in tungsten-rhenium alloys. This paper systematically investigates the “rhenium ductilizing effect” of additively manufactured tungsten-rhenium alloys fabricated by laser powder bed fusion (L-PBF) and laser directed energy deposition (L-DED) processes. This paper also reveals the successful deposition of crack-free tungsten-rhenium alloys and investigates the effect of rhenium addition on the microstructure and mechanical properties of tungsten-rhenium (Re: 0 – 22 wt.%) alloys produced via L-PBF and L-DED processes. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, High-Temperature Materials, Characterization |