| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Refractory Metallic Materials
|
| Presentation Title |
Microstructural Evolution in Laser Powder Bed Fusion Processed W and W-Re |
| Author(s) |
Krishna Kamlesh Verma, KV Mani Krishna, Shashank Sharma, M Radhakrishnan, Jitesh Kumar, Narendra Dahotre |
| On-Site Speaker (Planned) |
Krishna Kamlesh Verma |
| Abstract Scope |
Tungsten, renowned for its exceptional melting point, strength, thermal conductivity, and low thermal expansion, is vital for fusion reactor applications. However, its high ductile-to-brittle transition temperature (DBTT) in the range of 473-673 K and susceptibility to embrittlement under extreme conditions remain significant challenges. This study delves into laser powder bed fusion (LPBF) additive manufacturing as a transformative approach to overcome these challenges, specifically targeting the fabrication of pure tungsten and tungsten-5wt% rhenium (W-5Re) alloys. By optimizing LPBF parameters such as laser power and scanning speed, this research aims to enhance the manufacturability and performance of these materials. Through advanced characterization techniques, including density measurements, electron backscatter diffraction (EBSD), and atom probe tomography (APT), combined with mechanical testing, the study evaluates the impact of laser power and rhenium addition on microstructure and mechanical properties, for the potential implementation of LPBF based fabrication of W-5Re as a plasma-facing component in fusion reactors. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Mechanical Properties |