| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Alloys: Development and Manufacturing
|
| Presentation Title |
Al-Ce-Based Alloys: Processing, Mechanical Properties and High Temperature Stability |
| Author(s) |
Humphrey Wara Odhiambo, Gaurav Singh, Mohamad Tasneem, Monica Soare, Jason Leszczewicz, Jun Cui, Ralph Napolitano, Gaoyuan Ouyang, Catalin Picu |
| On-Site Speaker (Planned) |
Catalin Picu |
| Abstract Scope |
Al-Ce based alloys are developed for applications where stability at elevated temperatures is required. This property results due to the low diffusivity of Ce in Al which prevents precipitate coarsening. We study the eutectic binary alloy Al-10%Ce and a family of Al-10%Ce-x%Mg, with x between 4 and 10%. The alloys are characterized microstructurally and mechanically in as-cast and cast and extruded conditions. The temperature stability is probed by exposure to 300C for durations of time up to 400h, followed by testing at room temperature. All alloys considered exhibit excellent property retention upon such heat treatment. Mg remains mostly in solid solution in Al and provides substantial increase of the flow stress. All alloys exhibit high toughness. The fatigue resistance of extruded binary eutectic alloy is characterized by ~90 MPa stress amplitude at one million cycles. These properties render these alloys promising for applications including engine blocks and supersonic aircraft skin. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Other, Other, Other |