| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Alloys: Development and Manufacturing
|
| Presentation Title |
Al-Ca Eutectic Alloy: A New Candidate for Heat-Resistant Aluminum Alloys |
| Author(s) |
Jinshian Huang, Daisuke ANDO, Yuji SUTOU |
| On-Site Speaker (Planned) |
Jinshian Huang |
| Abstract Scope |
Eutectic-type aluminum alloys are promising matrices for developing heat-resistant aluminum alloys. This study evaluated different eutectic-type aluminum alloys at ambient and elevated temperatures. The Al-7.6Ca eutectic alloy, with its lamellar structure, exhibited superior performance, achieving tensile strengths of 261 MPa at room temperature and 189 MPa at 300 ℃. Despite a slight reduction in mechanical properties after thermal exposure, Al-7.6Ca remained more stable than other traditional alloys. Al-Ca binary alloys with varying Ca concentrations were tested to determine the optimal composition. The findings suggest that maintaining a high volume fraction of the Al4Ca phase is crucial for developing Al-Ca-based alloys. Investigations into related mechanisms revealed that the high strength of Al-7.6Ca is due to the load transfer mechanism, benefiting from the thermally stable Al4Ca phase in the eutectic structure. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, High-Temperature Materials, Mechanical Properties |