| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior of Nuclear Reactor Materials and Components IV
|
| Presentation Title |
Effect of neutron irradiation on microstructure and mechanical properties of microcrystalline and nanocrystalline nickel |
| Author(s) |
Ramprashad Prabhakaran, Kayla Yano, Stuart Maloy, Indrajit Charit, KL Murty |
| On-Site Speaker (Planned) |
Ramprashad Prabhakaran |
| Abstract Scope |
During irradiation, various types of defects are produced because of displacement cascades. Because grain boundaries act as sinks for irradiation-induced point defects, it is hypothesized that nanocrystalline (NC) materials (grain size: 20-100 nm) would possess enhanced radiation resistance compared to conventional micrograined materials. Even though NC materials present an unprecedented potential, scientific knowledge related to the effect of neutron irradiation on the mechanical properties and microstructure is still scarce. Hence, microcrystalline (grain size: 12 micron) and NC nickel (grain size: 20 nm) samples were irradiated (1.2 and 2.6 dpa; 80-89°C) in the Advanced Test Reactor to evaluate whether NC nickel is relatively more radiation resistant compared to conventional microcrystalline nickel. Experimental techniques such as SEM/EBSD, XRD, TEM, Vickers microhardness and tensile testing were employed to characterize the effect of neutron irradiation on the microstructure and mechanical properties of NC nickel and compared them with corresponding characteristics of microcrystalline nickel. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Environmental Effects, Mechanical Properties |