| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Materials in Energy Environments II
|
| Presentation Title |
Combining X-ray Computed Tomography and microstructure characterization to elucidate the creep behavior of LPBF 282 alloy |
| Author(s) |
Sebastien Dryepondt, Holden Hyer, Amir Ziabari, Amanda Heimbrook, Franklin Rahul |
| On-Site Speaker (Planned) |
Sebastien Dryepondt |
| Abstract Scope |
Haynes 282 is a high temperature Ni-based alloy that can be fabricated crack-free by laser powder bed fusion (LPBF) due to its relatively low gamma prime volume fraction. Other processing flaws can impact the alloy creep behavior and X-ray computed tomography was utilized before and after creep testing of LPBF 282 at 750°C to determine flaws evolution. A significant increase in flaws less than 250um in size was observed after testing, more pronounced for the specimens with a high initial volume fraction of flaws. Large flaws were directly linked to the final rupture of the specimen and correlation could be established between the initial flaw fraction and the specimen ductility and lifetime. Cross sectional microstructure characterization was used to quantify the different types of flaws in the material before and after testing, and the impact of the specific LPBF 282 microstructure on the alloy creep behavior will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, High-Temperature Materials, Nuclear Materials |