About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys V: Mechanical Behavior
|
| Presentation Title |
Effect of minor Ge/Mo/W on the corrosive behavior in FCC CoCrFeNi high-entropy alloy |
| Author(s) |
Che-Wei Tsai, Wei-Chen Hsu, Hung-Chih Liu, Ting-En Shen , Yu-Chih Tzeng, Tsung-Feng Wu, Jien-Wei Yeh |
| On-Site Speaker (Planned) |
Che-Wei Tsai |
| Abstract Scope |
The corrosion properties of non-equimolar FCC high entropy alloys with the addition of Germanium, Molybdenum and Tungsten are discussed individually. The results show that Ge can improve solid solution strengthening and pitting corrosion resistance. A potentiodynamic polarization test in deaerated 3.5% NaCl solution showed that Ge addition can effectively inhibit pitting corrosion and can improve the corrosion resistance. Adding molybdenum to the alloy, the corrosion resistance was also competitive compared to that of Hastelloy C276. Adding tungsten can further improve the pitting corrosion resistance of heated seawater. Through potentiodynamic polarization curves in 3.5 wt% NaCl solution from 25 ◦C to 70 ◦C, the addition of tungsten can raise the critical pitting temperature, while maintaining a lower passivation current density and a larger passivation range at the same time. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Mechanical Properties, Phase Transformations |