| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Alloys: Development and Manufacturing
|
| Presentation Title |
Effect of Zirconium on the Microstructure and Mechanical Properties of Laser Powder Bed Fused Eutectic Al-Ce Alloy |
| Author(s) |
Haijian Yang, Thinh Huynh, Yongho Sohn, Le Zhou |
| On-Site Speaker (Planned) |
Haijian Yang |
| Abstract Scope |
This study examines the microstructure and mechanical properties of cast and laser powder bed fused (LPBF) ternary Al-Ce-Zr alloys. In comparison with the casting method, LPBF Al-Ce-Zr alloys exhibit superior tensile strength and ductility attributed to the refinement of grains and intermetallics due to high cooling rate and Zr alloying. Heat treatment was optimized for both cast and LPBF alloys, and results showed that precipitation strengthening occurs in LPBF alloys but not in cast alloys. The creep properties of these alloys were evaluated based on the minimum creep strain rates. The microstructural evolution and deformation mechanisms were examined through electron microscopy after creep deformation. The results were compared between cast vs. LPBF and binary vs. ternary alloys. It is shown that Zr enhanced creep resistance of Al-Ce alloys through the formation of fine precipitates. The versatile effects of Zr in improving the mechanical properties of LPBF Al-Ce alloy are discussed. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, Additive Manufacturing, Mechanical Properties |