| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
2024 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-18: Effect of Silicon Content on the Microstructure and Mechanical Properties of Aluminum-Cerium Based Alloys |
| Author(s) |
Obidimma Davidson Ikeh, Dinc Erdeniz |
| On-Site Speaker (Planned) |
Obidimma Davidson Ikeh |
| Abstract Scope |
To enhance the high temperature capabilities of cast aluminum alloys, a novel eutectic system with a superior thermal stability compared to the conventional Al–Si alloy is needed. Among alternatives, the Al–Ce system, containing the thermally-stable Al11Ce3 intermetallic, has shown to have advantages mainly due to very low solid-state diffusivity of cerium in aluminum. However, the cast Al–Ce binary alloys offer a limited strength for many engineering applications. Alloying of the Al–Ce binary system towards creating ternary or higher-order eutectics, containing high volumes of fine intermetallic phases, is anticipated to lead to an increased strength. In this work, variations in microstructural evolution and strengthening mechanism are investigated for the Al–Ce system alloyed with different amounts of silicon. This study includes microstructural analysis, microhardness testing at room temperature, and high-temperature tensile assessments to understand the impact of silicon on the alloy performance. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Aluminum, Characterization, Solidification |