About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Environmentally Assisted Cracking: Theory and Practice
|
Presentation Title |
Site Specific Multimodal In-situ Study of Early-Stage Corrosion of Model Fe-Cr-Ni Alloys Using Electrochemical Atomic Force Microscopy |
Author(s) |
Tingkun Liu, Cheng-Han Li, Matthew Olszta, Jinhui Tao, Arun Devaraj |
On-Site Speaker (Planned) |
Tingkun Liu |
Abstract Scope |
Stainless steels are used in a myriad of engineering applications including in construction, automotive and nuclear reactors. Developing accurate predictive mechanistic models for corrosion kinetics of stainless steel specifically in chloride environments has been a topic of research studies over many decades. Quantitative, spatially-resolved in-situ studies of stainless steel corrosion kinetics can be very valuable for such predictive corrosion kinetics model development. Towards this goal, we demonstrate the ability to quantitatively analyze the corrosion kinetics of a model austenitic Fe-18Cr-14Ni alloy using systematic in situ liquid cell electrochemical AFM studies. The kinetics of corrosion at austenite grain boundaries are imaged in high resolution in deuterium chloride solution both in the presence and absence of electrochemical bias. The insights gained in this work and the in-situ liquid cell AFM methodology are relevant to the broader areas for understanding corrosion, electrochemical corrosion, stress corrosion cracking, and hydrogen embrittlement in stainless steel. |
Proceedings Inclusion? |
Planned: |
Keywords |
Environmental Effects, Mechanical Properties, Characterization |