| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Sustainability of High Temperature Alloys
|
| Presentation Title |
Microstructure, Mechanical, Oxidation and Electrochemical Behavior of Thermo-Plastically Deformed High Entropy Alloys |
| Author(s) |
Mayank Garg, Tushar Borkar |
| On-Site Speaker (Planned) |
Mayank Garg |
| Abstract Scope |
High strain rate deformation is typically performed to obtain a fine grain structure with uniform distribution of properties. In the present study, a thermoplastic deformation processing technique which is a modification of friction stir processing, called point straining, is used to enhance the mechanical and oxidation performance of AlCoCrFeNi high entropy alloy (HEA). The deformed HEA specimen enhances the mechanical properties by atleast 1.5 times and reduces the oxidation kinetics by ∼50%. The electrochemical impedance spectroscopy (EIS) provided new findings about the protectiveness and performance of the oxide-scale. Oxide scale of deformed HEA sample depicted high polarization resistance as compared to oxide scale of as-cast HEA sample. The excellent combination of mechanical, oxidation and electrochemical performance was due to the highly refined microstructure with dual phase crystal structure of the deformed HEA. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, High-Temperature Materials, Mechanical Properties |