| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior of Nuclear Reactor Components
|
| Presentation Title |
High Throughput Assessment of Creep Behavior of Advanced Alloys for Model Development and Validation |
| Author(s) |
Moujhuri Sau, Zezhou Li, Eric Hintsala, Douglas Stauffer, Laurent Capolungo, Nathan Mara |
| On-Site Speaker (Planned) |
Moujhuri Sau |
| Abstract Scope |
The mechanical performance of materials used in extreme conditions must be well-understood to facilitate materials design. Recent advancements in nanomechanical testing have proven effective in determining the interplay of strain-rate sensitivity, activation volume, activation energy and applied stress to understand time-dependent deformation from small volumes (~1μm3), for complex loading geometries, and at higher throughput than traditional creep testing. These datasets will guide and validate polycrystalline deformation models via determination of mechanism-specific parameters from nanoindentation testing of advanced steels. Elevated temperature nanoindentation tests were carried out in both inert gas and vacuum environments on two reactor steel candidates –T91 and MA957. The constitutive creep parameters of these materials were quantified using indentation-based stress relaxation tests, strain rate jump tests and electron microscopy. Datasets arising from these studies provide a fundamental understanding of creep at diminished length scales, and will be benchmarked to bulk tensile creep tests. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Mechanical Properties, Iron and Steel |