| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Elucidating Microstructural Evolution Under Extreme Environments
|
| Presentation Title |
Thermomechanical Effects on Grain Structure Evolution in Ni-8Cr Alloy Using X-Ray Diffraction Contrast Tomography |
| Author(s) |
Swapnil Morankar, Boopathy Kombaiah, William Chuirazzi |
| On-Site Speaker (Planned) |
Swapnil Morankar |
| Abstract Scope |
Extreme environments such as high temperatures, mechanical stresses, and high radiation doses alter the grain structure of structural materials and fuels used in nuclear applications, and adversely impact their properties. Thus, it is important to understand the mechanisms of grain structure evolution in these materials under extreme conditions. In the present work, we have investigated the evolution of grain structure in Ni-8Cr alloy in response to temperature and/or mechanical stress using a correlative approach of three-dimensional X-ray diffraction contrast tomography and electron backscatter diffraction. Several parameters such as shapes and sizes of grains, grain orientations, grain boundary characters were statistically analyzed to understand the mechanisms and kinetics of grain growth. The mechanistic insights obtained from this study and their further impact on the design of structural materials for extreme environments will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Nuclear Materials, High-Temperature Materials |