About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Metal Matrix Composites: Processing, Additive Manufacturing, and Applications
|
| Presentation Title |
From Spray Forming to Laser Remelting: Tailoring the Wear Resistance of Al–Cu–Fe–Cr Quasicrystalline Composites |
| Author(s) |
Adilson Vitor Rodrigues, Thaís Jardim, Andres Felipe Ramirez Rodriguez, Guilherme Zepon, João Batista Fogagnolo, Marcelo Câmara, Witor Wolf |
| On-Site Speaker (Planned) |
Adilson Vitor Rodrigues |
| Abstract Scope |
Quasicrystalline phases are attractive for tribological applications owing to their high hardness, low friction coefficient, and low surface energy. Laser Surface Remelting (LSR) promotes their formation through rapid solidification. Based on optimized parameters from previous single-track studies, fully remelted surfaces were produced on spray-formed Al85Cu6Fe3Cr6 and Al90Cu4Fe2Cr4 (%at.) alloys. The modified layers were characterized by X-ray diffraction, scanning and transmission electron microscopy, followed by pin-on-disk wear tests. The laser-remelted Al90Cu4Fe2Cr4 alloy exhibited superior wear resistance, with a specific wear rate on the order of 10-4 mm3/N.m, while the Al85Cu6Fe3Cr6 alloy displayed wear rates on the order of 10-3 mm3/N.m. The superior tribological performance of the Al90Cu4Fe2Cr4 was attributed to its better surface quality and finer, more homogeneous dispersion of laser-induced icosahedral quasicrystals. The present study highlights the beneficial effect of a refined dispersion of laser-induced icosahedral quasicrystals on wear resistance. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Surface Modification and Coatings, Other, Other |