About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Alloys: Development and Manufacturing
|
| Presentation Title |
Load transfer efficiency of the Al₁₁(Ce, La)₃ phase in an Al-8(Ce, La) alloy using in-situ synchrotron X-ray diffraction during uniaxial tensile testing. |
| Author(s) |
Ruining Jin, Christina Reinhard, Alessandro De Nardi, Shikang Feng, Thomas Zillhardt, Patrick Spencer Grant, Enzo Spencer Liotti |
| On-Site Speaker (Planned) |
Ruining Jin |
| Abstract Scope |
Al-Ce alloys are a potential alternative to Al-Si alloys for transportation applications as they offer strength retention up to 300 °C thanks to the excellent thermal stability of the Al11Ce3 intermetallic phase[1]. However, their limited strength at room temperature remains poorly understood. Conventional models used for interpretation, e.g. the Orowan mechanism[2], focus on the size and distribution of second phases, overlooking the impact of intrinsic properties of the strengthening phase and interfacial characteristics. To address this, three cast alloys (Al-8Si, Al-7Ce-1.7Si, and Al-9Ce) with analogous microstructures but distinct strengthening phases (Si, Al11Ce3, and CeAlSi) were studied. In-situ X-ray diffraction during tension was used to quantify the load carried by each strengthening phase, allowing comparison of their contribution across alloys. Post-mortem characterization was employed to analyse the structure and interface of strengthening phases. The results help refine the understanding of second-phase strengthening and support the design of cast Al-Ce alloys. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, Mechanical Properties, Solidification |