About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
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Tackling Metallic Structural Materials Challenges for Advanced Nuclear Reactors
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| Presentation Title |
Innovative Processing and Characterization of Novel High-Strength and Corrosion-Resistant Cr/HEA Gradients for Fuel Cladding |
| Author(s) |
Mohan Sai Kiran Kumar Yadav Nartu, Daniel Yoon, Subhashish Meher, Mageshwari Komarasamy, Lei Li, Ayoub Soulami, Isabella Van Rooyen |
| On-Site Speaker (Planned) |
Mohan Sai Kiran Kumar Yadav Nartu |
| Abstract Scope |
The strength and corrosion resistance of the fuel cladding is critical to prevent corrosion of fuel rods by the coolant and the release of fission products into the coolant. High entropy alloys(HEAs) have recently gained traction due to their excellent mechanical and irradiation properties. In this work, we investigate a novel gradient (Cr->HEA) alloy for fuel cladding where the gradient advances from pure-Cr to HEA(CoCrFeNiCu0.12) radially inwards. Unlike axial gradients, which are easy to fabricate via multiple processing methods, radial gradients are challenging to manufacture, and barely any literature has depicted their success. In this study, we have designed an innovative processing methodology using the Hot Iso-static Process(HIP) to fabricate Cr-HEA radial gradients. The gradient compositions were designed using Thermo-Calc to avoid the brittle sigma phase during fabrication, and HIP-process parameters were developed to achieve complete densification. This presentation will also discuss the microstructural characterization and performance of the gradient-HEA. |