About this Abstract |
Meeting |
2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
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Symposium
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2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
|
Presentation Title |
Addition of Ti Intermediate Film for Fabricating Crack-Free 6061 Aluminum Alloy in Laser-Foil-Printing Additive Manufacturing |
Author(s) |
Chia-Hung Hung, Hsiang-Min Kuo |
On-Site Speaker (Planned) |
Chia-Hung Hung |
Abstract Scope |
Effect of addition of titanium on AA6061 aluminum alloy in the Laser Foil Printing (LFP) process was investigated. The results showed that titanium significantly improved crack resistance and enhanced the material's density (over 99.5%). Microstructural analysis indicated that titanium promoted grain refinement, reducing the average grain size from 75.63 ± 40.37 μm to 1.28 ± 0.51 μm. X-ray diffraction (XRD) confirmed the formation of Al₃Ti intermetallic compounds, which played a key role in enhancing mechanical properties. Tensile testing revealed a 52.75% increase in ultimate tensile strength and a 73% improvement in elongation. Additionally, the addition of titanium allows stable conduction-mode processing at higher scanning speeds, resulting in high-density material fabrication and wide-range optimal process parameters. Fractographic analysis revealed a mixed ductile-brittle fracture mechanism, indicating a well-balanced improvement in strength and ductility. These findings demonstrate the potential of titanium-modified LFP-fabricated AA6061 aluminum alloy for high-performance applications. |
Proceedings Inclusion? |
Planned: Post-meeting proceedings |