About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Materials, Processes and Applications for Energy Industry
|
| Presentation Title |
Elucidating the Mechanisms of Creep Failure in LPBF SS-316H using X-Ray Computed Tomography |
| Author(s) |
Caleb Massey, Peeyush Nandwana, Andres Marquez Rossy, Rahul Franklin, Sebastien Dryepondt, Amir Ziabari |
| On-Site Speaker (Planned) |
Caleb Massey |
| Abstract Scope |
The Advanced Materials and Manufacturing Technologies (AMMT) is developing a rapid framework for qualifying laser powder bed fusion (LPBF) 316H stainless steel in nuclear environments. As part of this initiative, multiple heats of LPBF SS-316H materials have been subjected to creep tests at elevated temperatures to project component lifetime for in-service conditions. In this work, full-sized LPBF SS-316H specimens were subjected to pre- and post-creep X-ray computed tomography (XCT) scans to evaluate the effect of pre-existing lack-of-fusion or keyhole porosity on subsequent porosity evolution during high-temperature mechanical testing. Scans of LPBF SS-316H samples tested at 600C and 725C revealed a shift of pore morphology as test temperature increases after creep testing. The success in utilizing pre-and post-creep XCT data in revealing defect evolution is also being applied to subsized creep testing initiatives on irradiated specimens in ongoing irradiation campaigns on LPBF SS-316H. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Nuclear Materials, Mechanical Properties |