| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Advanced Characterization of Materials for Nuclear, Radiation, and Extreme Environments V
|
| Presentation Title |
Microstructural Evolution in 316L Stainless Steel Under Lead-Bismuth Eutectic Corrosion |
| Author(s) |
Zhiyu Zhang, Sarah. Y. Wang, Peter Hosemann, Yang Yang, Andrew M. Minor |
| On-Site Speaker (Planned) |
Zhiyu Zhang |
| Abstract Scope |
Lead-bismuth eutectic (LBE) is a candidate for coolant for advanced nuclear reactors and other high-temperature heat transfer applications; however, the corrosion of structural materials in LBE still limits its applications. Previous research has indicated that deformation-induced twin boundaries can facilitate LBE penetration into steel, accompanied by ferritization of the steel matrix, i.e., the face-centered cubic (FCC) steel is transformed into a body-centered cubic (BCC) structure. Despite these findings, the mechanism underlying the ferritization of 316L stainless steel (SS 316L) in LBE remains unclear. In this study, we employed advanced electron microscopy characterization techniques, including four-dimensional scanning transmission electron microscopy (4D-STEM) and electron energy loss spectroscopy (EELS), to investigate the ferritization during late-stage LBE corrosion. Our work provides insights into the microstructural evolution during intergranular corrosion in SS 316L by LBE. |