| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Cold Spray Additive Manufacturing: Part Quality and Performance
|
| Presentation Title |
Effect of Post-deposition Heat Treatment on Mechanical, Microstructural, and Corrosion Properties of NASA HR-1 Cold Spray Deposits |
| Author(s) |
Sathwik Tirukandyur, Marius Ellingsen, Ozan Cagatay Ozdemir, Bharat K Jasthi, Zachary Velasquez |
| On-Site Speaker (Planned) |
Sathwik Tirukandyur |
| Abstract Scope |
The main objective of this work was to investigate the microstructure, mechanical, and corrosion properties of NASA HR-1 (Fe-Ni superalloy) cold spray deposits as a function of spray parameters and post-deposition heat treatment temperatures. The influence of process gas (He vs N2) on the properties was also investigated. Microstructural characterization was performed using optical and scanning electron microscopy. Post deposition heat treatment was performed at 550°C and 950°C with the objective of improving the mechanical properties of the deposits. N2 based deposits exhibited brittle behavior, while helium-based deposits showed 22% elongation after the post-deposition heat treatment at 950°C. Post-deposition heat treatment at 950°C resulted in recrystallized microstructure but resulted in the formation of ɳ- phase in all the cold spray deposits. Electrochemical studies were performed in 3.5 wt.% NaCl solution and the influence of process gas and heat-treating temperatures on the corrosion properties were analyzed and reported. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, High-Entropy Alloys, Phase Transformations |