About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
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Environmental Degradation of Multiple Principal Component Materials
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Presentation Title |
Experimental and Numerical Assessment of the Corrosion Behavior of a Friction Stir Processed Equiatomic CrMnFeCoNi High Entropy Alloy in a Neutral Environment |
Author(s) |
Sam Yaw Anaman, Solomon Ansah, Sung-Tae Hong, Min-Gu Jo, Jin-Yoo Suh, Heung Nam Han, Minjung Kang, Jong-Sook Lee, Hoon-Hwe Cho |
On-Site Speaker (Planned) |
Sam Yaw Anaman |
Abstract Scope |
The corrosion behavior of a friction stir processed (FSPed) equiatomic CrMnFeCoNi high-entropy alloy (HEA) is investigated in an aerated 0.5 M Na2SO4 electrolyte solution at room temperature. The microstructural analysis reveals a highly refined stir zone (SZ) with an average grain size that decreases from the top region of the SZ to the bottom region of the SZ. Grain refinement in the SZ enhances the rapid formation of the passive layer leading to better corrosion properties of the FSPed HEA. Pitting corrosion behavior of the FSPed HEA is predicted to be influenced by the micro-galvanic nature of the HEA, leading to increase in polarization at the anodic sites (pits). A numerical model is established to simulate the pitting corrosion behavior on the surface of the FSPed HEA in a neutral environment. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Entropy Alloys, Other, Modeling and Simulation |