About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Mechanical Behavior of Nuclear Reactor Materials and Components III
|
Presentation Title |
Evaluation of Size Effects in Small Scale Mechanical Testing Combining Multi-length Scale Models and Experiments |
Author(s) |
David Frazer, Stephanie Pitts, Brennan Harris, Fei Teng, Trishelle Copeland-Johnson, Kaustubh Bawane, Sebastian Lam, Dewen Yushu, Peter Hosemann, Fabiola Cappia |
On-Site Speaker (Planned) |
David Frazer |
Abstract Scope |
Small scale mechanical testing (SSMT) has an advantage in the nuclear mechanical testing community by reducing the volume of material tested. This reduction permits the testing of ion beam irradiated material and better utilization with reduced costs for neutron irradiated material. The main challenge with SSMT is the size effects, smaller is stronger phenomenon, make it difficult to relate the mechanical properties measured in the small test specimens to bulk values. In this work micro-tensile specimens of various sizes were manufactured with focused ion beam and femto-second laser techniques and coupled with crystal plasticity, through hybrid modeling approaches, to elucidate the transition from the size effect region to the bulk mechanical properties. These experiments were performed on tungsten, zirconium and irradiated zirconium to evaluate different crystal structures and defect densities in the material. The effect of temperature, above and below ambient, on the transition is being examined in BCC materials. |
Proceedings Inclusion? |
Planned: |
Keywords |
Nuclear Materials, Mechanical Properties, Computational Materials Science & Engineering |