About this Abstract |
| Meeting |
TMS Specialty Congress 2026
|
| Symposium
|
4th World Congress on High Entropy Alloys (HEA 2026)
|
| Presentation Title |
An Innovative Radial Gradient Design of a Copper-Based High Entropy Alloy (Cu-HEA)/Chromium (Cr) Bi-Metallic Structure Fabricated Using Powder-Metallurgy Hot Isostatic Pressing for Extreme Environment Applications |
| Author(s) |
Daniel Yoon, Mohan Nartu, Alex Rogers, Isabella van Rooyen |
| On-Site Speaker (Planned) |
Daniel Yoon |
| Abstract Scope |
Functionally graded materials (FGMs) can produce innovative, unique metallic structures allowing material properties to vary along a defined geometrical direction to enable highly tailored mechanical and thermal properties. A radial gradient FGM design was developed to combine a copper-based high entropy alloy (Cu-HEA) with superior mechanical strength and irradiation resistance with Chromium (Cr) for good corrosion resistance in nuclear fuel cladding applications. Using a custom-designed powder loading system with concentric cylindrical dividers, the design optimization via benchtop tests allowed good radial gradient formation. Following this, the Cu-HEA and Cr powders were sintered and consolidated using powder metallurgy hot isostatic pressing (PM-HIP), a manufacturing process to produce dense and homogeneous structures. SEM and EDS microstructural analyses confirmed the successful integration of the bi-metallic radial gradient structure, revealing a gradual compositional shift from the Cu-HEA core to the Cr periphery. This innovative approach opens new possibilities in high-performance applications in extreme environments. |
| Proceedings Inclusion? |
Undecided |