| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Late News Poster Session
|
| Presentation Title |
N-43: Nanoindentation Creep Testing on Austenitic Alloys |
| Author(s) |
Tianyi Chen |
| On-Site Speaker (Planned) |
Tianyi Chen |
| Abstract Scope |
The evaluation of creep in nuclear reactors is a major concern for materials qualification and reactor safety during operation. Conventional creep testing is time consuming and expensive. Naonindentation creep testing provides a rapid-turnaround and low-cost screening tool to probe the creep properties. In addition, aanoindentation techniques allow mechanical testing on ion-irradiated samples and smaller neutron-irradiated samples. We found that nanoindentation creep testing is highly-sensitive to radiation damage by probing the changes in dislocation interactions with the damage features. Using data from neutron-irradiated austenitic alloys, we will showcase the correlations between deformation microstructures and the measured nanoindentation creep parameter changes. A new data-analysis method will also be introduced to explain the significant variance in nanoindentation creep exponents between different indents when the data is processed by the existing data-analysis method. This work advances the understandings of deformation mechanisms at small scales to close the gap between different testing length scales. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Nuclear Materials, Characterization, |