| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Advanced Characterization of Materials for Nuclear, Radiation, and Extreme Environments III
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| Presentation Title |
Utilizing In-situ Microscopy Techniques to Decipher the Micro-scale Dynamics of Materials in Extreme Environments |
| Author(s) |
Eric Lang, Samuel A. Briggs, Nathan Heckman, Anthony Monterrosa, Trevor Clark, Christopher M Barr, Daniel Buller, Brad Boyce, Khalid Hattar |
| On-Site Speaker (Planned) |
Eric Lang |
| Abstract Scope |
Materials in extreme conditions such as fusion reactors and cladding in advanced fission reactors undergo compositional, microstructural, and property changes in response to thermal, mechanical, and irradiation stimuli. Typical materials analysis examines two states: pristine and post-mortem. A complete picture of evolution requires in-situ monitoring to elucidate transient processes dictating the final state. The recently developed in-situ ion irradiation scanning electron microscope (I3SEM) at Sandia National Laboratories (SNL) offers an ideal platform for micro-scale analysis of material dynamics under irradiation, temperature, and straining. Coupling a 6 MV Tandem Accelerator, a 1.2 kV ion source, and an 808nm laser with an environmental high-resolution SEM with heating, cooling, liquid, and straining stages, materials can be probed under synergistic extreme conditions. This work focuses on the in-situ characterization of candidate materials, examining their behavior in simulated reactor quiescent and transient conditions. SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525. |