| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmental Degradation of Multiple Principal Component Materials
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| Presentation Title |
Microstructure and Corrosion of Multi-phase Ni-Fe-Cr-Mo-W-X Multi-principal Element Alloys |
| Author(s) |
Anup Panindre, Henk Colijn, Babu Viswanathan, Carley Goodwin, Daniel Huber, Christopher Taylor, Gerald S. Frankel |
| On-Site Speaker (Planned) |
Gerald S. Frankel |
| Abstract Scope |
The design and corrosion resistance of single-phase Ni-Fe-Cr-Mo-W-X (X=Ru, Mn, Al, and Cu) MPEAs has been recently reported. In this study, these alloys were heat treated at 800 °C for up to 160 h starting from the solutionized single-phase to allow precipitation of secondary phases that provide increased hardness and strength. During heat treatment at 800 °C, σ-phase rich in Cr, Ru, Mo and W precipitated in each alloy. After aging, the hardness of the MPEAs containing Ru and Al showed the most significant increase in hardness, about 60 and 90 % respectively, due to the precipitation. Some of the MPEAs were found to resist localized corrosion after the aging heat treatment. While the Ru-containing MPEA was resistant to localized corrosion at temperatures up to 80 °C, the ones containing Mn, Cu or Al became susceptible to localized breakdown at the interface between the matrix and precipitate at ambient temperatures. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Environmental Effects, Mechanical Properties |