About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Lightweight Alloy Matrix Composites
|
| Presentation Title |
Effect of Zirconium on the Microstructure and Mechanical Properties of Laser Powder Bed Fused Eutectic Al-Ce-Zr Alloy |
| Author(s) |
Haijian Yang, Thinh Huynh, Liyi Wang, Xuanzhuo Nie, Wei Xiong, Yongho Sohn, Le Zhou |
| On-Site Speaker (Planned) |
Haijian Yang |
| Abstract Scope |
Zirconium (Zr) is recognized for its grain refinement capability in aluminum alloys. This study investigates the influence of Zr (0.3, 0.7 and 1.0 wt.%) on the microstructure and mechanical properties of near-eutectic Al–Ce-Zr alloys produced by casting and laser powder bed fusion (LPBF). Compared to the cast alloys, the LPBF Al–Ce–Zr alloy exhibited significantly enhanced tensile strength and ductility, attributed to grain and intermetallic refinement induced by rapid solidification. Heat treatment had mild effect on the mechanical properties of the cast alloys, but led to notable improvements on LPBF alloys with higher Zr concentrations. Compressive creep tests were conducted on as-built specimens at temperatures between 250-400°C. The steady-state creep strain rates and microstructural evolution were determined and analyzed to reveal the creep deformation mechanisms. The discussion will highlight the multifaceted role of Zr on the phase transformation and mechanical performance of LPBF-processed Al–Ce alloys. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Aluminum, Mechanical Properties |