About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Seeing is Believing -- Understanding Environmental Degradation and Mechanical Response Using Advanced Characterization Techniques: An SMD Symposium in Honor of Ian M. Robertson
|
Presentation Title |
Understanding Basic Properties and Degradation Mechanisms of Materials Using Ion Beams |
Author(s) |
Steven J. Zinkle, Ling Wang, Yan-Ru Lin |
On-Site Speaker (Planned) |
Steven J. Zinkle |
Abstract Scope |
Atomic displacement processes associated with ion beam irradiations can provide insight on numerous materials phenomena including intrinsic phase stability, fundamental point defect migration energies, and hardening mechanisms. This presentation will present illustrative examples on a wide range of materials phenomena that are accelerated by particle bombardment including ballistic dissolution and radiation enhanced coarsening of precipitates, stress-enhanced vacancy migration, 1D long range migration of defect clusters, temperature-dependent cavity formation, and hardening and softening processes in structural materials. In general, regions near surfaces or grain boundaries and near the implanted ion region should be avoided for quantitative analyses due to potential artifacts, although in some cases these artifacts can be beneficially used to provide additional insight on fundamental materials properties. Superposition of hardening contributions associated with multiple types of dislocation obstacles will also be discussed. Several examples using ion implantation or irradiation as diagnostic monitors for fundamental materials phenomena will be summarized. |
Proceedings Inclusion? |
Planned: |
Keywords |
Nuclear Materials, Iron and Steel, |