| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing for Energy Applications II
|
| Presentation Title |
A High-throughput Alloy Development Strategy for Corrosion Resistant Materials via Directed Energy Deposition |
| Author(s) |
Phalgun Nelaturu, Michael Moorehead, Bonita Goh, Dan J Thoma, Adrien Couet, Kumar Sridharan |
| On-Site Speaker (Planned) |
Phalgun Nelaturu |
| Abstract Scope |
Next-generation molten salt based energy systems require materials with high corrosion resistance and thermal stability. High-entropy alloys (HEAs), alloys with multiple principal components, open up a vast composition space that might hold promising materials resistant to molten salt corrosion. This necessitates rapid alloy development (including synthesis and testing) to identify promising candidate materials. To this end, directed energy deposition was employed as a high-throughput technique to synthesize two quaternary systems – i) FeCrMnNi, based on 316SS, for nitrate salt environments, and ii) NiMoCrFe, based on Hastelloy-N, for fluoride salt environment. Grids of twenty-five samples with varying compositions were fabricated via in-situ alloying of elemental powders in a LENS system. Samples with controlled uniform compositions and dimensions were achieved by carefully manipulating processing parameters. The alloys manufactured by this high-throughput approach were characterized before and after high-temperature molten salt exposure via SEM, EDS, XRD, and profilometry to understand the corrosion behavior. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |