About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmental Degradation of Additively Manufactured Materials
|
| Presentation Title |
Microstructural Evolution of Irradiated LPBF 316 Stainless Steel Using Neutrons and Ions |
| Author(s) |
Stephen Taller, Wei-Ying Chen, Timothy Lach, Alec Pfundheller, Mohammad Umar Farooq Khan |
| On-Site Speaker (Planned) |
Stephen Taller |
| Abstract Scope |
Advanced materials and manufacturing technologies are poised to improve the safety and design characteristics of nuclear technologies. However, techniques such as laser powder bed fusion have issues that arise from the layer-by-layer build approach. Because of the greater possible microstructural variability in additively manufactured materials and the dearth of materials test reactors, relying on neutron irradiation studies to produce data for materials qualification for every possibility is impractical. This work examined identical stainless-steel specimens irradiated at multiple temperatures and radiation damage conditions using neutrons or ions to generate (in an accelerated manner) microstructural evolution data relevant to current and proposed advanced nuclear power reactors. The results focus on the as-printed material and show three key aspects of the microstructural evolution examined using transmission electron microscopy: dislocation structure evolution, nanocavity formation and evolution, and radiation-induced precipitation and segregation. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Additive Manufacturing, Iron and Steel |