About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Presentation Title |
Metal Additive Manufacturing for Advanced Materials by Laser Foil Printing |
Author(s) |
Fernando Sepulveda, Hiep Pham, Tunay Turk, Ming Leu, Jonghyun Park |
On-Site Speaker (Planned) |
Jonghyun Park |
Abstract Scope |
Metal Glasses (MGs) have superior mechanical properties compared to crystalline metals due to a lack of crystalline defects, and are typically produced by rapid quenching and solidification of molten metals. However, parts made of metallic glasses have been limited to simple geometries (e.g., thin films) because the manufacturing of MG parts requires a very high cooling rate that conventional powder-based metal additive manufacturing technologies cannot meet. A new foil-based metal additive manufacturing technique called Laser Foil Printing (LFP) has the potential to overcome the challenge of rapid cooling because the thermal heat of the melt pool can be conducted away very efficiently through the bulk foil compared to powders, opening the possibility to print MGs with 3D structures and in commercially significant sizes. In this work, the LFP manufacturing approach is used to produce advanced MG materials and structures with extremely high mechanical properties (density, toughness, corrosion resistance, etc.) by developing a controllable active cooling system to rapidly cool the metal foil after each printing step. The research focuses on studying the heat generation and temperature profile of the LFP technique with and without an active cooling system. The impact on the melting and welding of the metal foils layers, material composition and structure, material property, and resulting part geometry have been investigated. The study aspires to refine LFP processes to create unique composite MG alloys with complex 3D structures. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |