About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Materials and Chemistry for Molten Salt Systems
|
Presentation Title |
Corrosion Behavior of Compositionally Gradient Additively Manufactured 316L Stainless Steel Doped with Hafnium in Eutectic NaCl-MgCl2 Molten Salt at 700 °C |
Author(s) |
Laura Hawkins, Jingfan Yang, Michael Woods, Trishelle Copeland-Johnson, Ruchi Gakhar, Lin Shao, Xiaoyuan Lou, Daniel Murray, Lingfeng He |
On-Site Speaker (Planned) |
Lingfeng He |
Abstract Scope |
Classification of structural materials for next generation molten-salt reactors must consider corrosion of the salt-facing components. This study combines additively manufactured (AM) high-throughput materials characterization with molten salt corrosion to demonstrate the effects of hafnium dopants on corrosion behavior. The AM 316L stainless steel samples are submerged in eutectic NaCl-MgCl2 molten salt at 700 °C for 30 and 120 hours. The morphology and microstructure of the gradient region after the corrosion tests are analyzed using scanning electron microscopy and transmission electron microscopy equipped with energy dispersive X-ray spectroscopy to understand intergranular corrosion, quantify Cr leaching and corrosion rates, and characterize corrosion by-products. The increased attack of grain boundaries as a function of time and the effect of hafnium gradients on corrosion rates will be presented. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Characterization, Environmental Effects |