| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Accelerated Materials Evaluation for Nuclear Applications Utilizing Irradiation and Integrated Modeling
|
| Presentation Title |
H-2: Characterization of Helium Implanted Single Crystal Titanium |
| Author(s) |
Sarah R. Stevenson, Mehdi Balooch, Andrew Scott, Peter Hosemann, Frances Allen, Saryu Fensin |
| On-Site Speaker (Planned) |
Sarah R. Stevenson |
| Abstract Scope |
Helium bubble development in materials due to plasma exposure or transmutation is an ongoing concern for the structural integrity of nuclear components. Numerous studies have been performed on a range of materials to analyze degradation phenomena involving helium bubbles. In this work, helium ion microscopy (HIM), featuring a nanometer-sized ion beam allowing precise local implantation of near-surface helium, was used to implant single crystal titanium samples of varying crystallographic orientations. For each sample, multiple implantations were performed using a range of doses and dose rates. The implantations were characterized using a multi-technique approach. The swelling and surface topography changes of the implanted areas were investigated by atomic force microscopy (AFM) with sub nanometer height resolution. Nano-indentation was used to determine the variation of local hardness and elastic modulus with depth. Transmission electron microscopy (TEM) allowed for the characterization of defects and bubble distributions. |
| Proceedings Inclusion? |
Undecided |