About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Accelerated Qualification Methods for Nuclear Reactor Structural Materials
|
| Presentation Title |
Accelerated Creep Evaluation of L-PBF 316H Stainless Steel Using High-Temperature Nanoindentation |
| Author(s) |
Minh-Tam Hoang, Eric Hintsala, Kevin Schmalbach, Douglas Stauffer, Lars Hansen, Amanda Dillman, Andrea Alaniz, Laurent Capolungo, Robin Montoya, John Carpenter, Ben Eftink, Nathan Mara |
| On-Site Speaker (Planned) |
Minh-Tam Hoang |
| Abstract Scope |
Advanced nuclear technology depends on materials that perform reliably under high temperature, corrosion, and irradiation conditions. Additive manufacturing (AM) offers a cost-effective route to produce components with tailored properties not achievable by conventional methods. However, the heterogeneity of AM materials complicates qualification and makes high-throughput data collection challenging and costly. This work focuses on an accelerated framework for evaluating creep properties in L-PBF 316H stainless steel. Specifically, high-temperature nanoindentation strain rate jump tests are conducted up to 800°C to extract key parameters such as strain rate sensitivity. Combined with data from bulk creep testing, these parameters are used as inputs to predict creep rupture in L-PBF 316H using fewer bulk tests to rupture than with conventional approaches. We present elevated temperature mechanical property maps of L-PBF 316H and correlate them with discrete microstructural features via SEM/EBSD and TEM and extend these relationships to observed bulk behavior. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, High-Temperature Materials, Modeling and Simulation |