| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
2024 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-66: Fracture Toughness of Additively Manufactured Tungsten |
| Author(s) |
Aishwarya Jayadeep, Punit Kumar, David H. Cook, Patxi Fernandez-Zelaia, Michael M. Kirka, Robert O. Ritchie |
| On-Site Speaker (Planned) |
Aishwarya Jayadeep |
| Abstract Scope |
Tungsten is a material of interest for extreme environments, such as high temperatures and radiation exposure in nuclear fusion reactors. However, it is brittle at room temperature and has exceptionally high melting and ductile-to-brittle transition temperatures, all factors posing major challenges for traditional manufacturing and processing methods. This study examines the mechanical properties of a large crack-free tungsten block produced by electron beam melting (EBM), a powder fusion additive manufacturing method in which solidification cracking is avoided by raising the powder bed temperature above the ductile-to-brittle transition temperatures. The process imparts a microstructure with columnar grains along the build direction. Here, we discuss the preliminary results of the fracture toughness of this EBM-printed tungsten part, with assessments of fracture resistance when the grain boundaries are oriented parallel and perpendicular to the crack growth directions. These results can inform the fabrication of tungsten parts via additive methods for extreme environments. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Additive Manufacturing, Other, Other |