About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
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Lightweight Composites, Materials, and Alloys
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| Presentation Title |
Correlating Microstructural Evolution and Magnetic Response to Variable Cooling in Cu-Ni-Al-Fe Systems
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| Author(s) |
Ramasis Goswami, Thomas Mion, Andrew Shabaev |
| On-Site Speaker (Planned) |
Ramasis Goswami |
| Abstract Scope |
Nickel-Aluminum Bronze alloys are critical materials for naval marine components, such as propellers, where minimizing the magnetic signature is a requirement for stealth and survivability. Determining how the cooling rates affect the magnetic profile is vital for the deployment of next-generation naval engineering components. The core scientific challenge lies in understanding the complex microstructural evolution of NAB under greater cooling conditions, and to determine how rapid thermal histories drive the precipitation, structural ordering, and spatial distribution of fine κ-phases, and the alloy's resulting ferromagnetic behavior. To address this, this study investigates a Cu-Al-Fe-Ni alloy subjected to four distinct cooling rates to study varying thermal histories on microstructures and magnetic properties. We identify that the alloy exhibits ferromagnetism directly driven by the precipitation of Fe particles and core-shell Fe3AlNi-NiAlFe particles. These findings reveal that the thermal parameters must be precisely engineered to suppress ferromagnetic phases to preserve the low-magnetic signatures. |