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 |
Fabricating Functionally Gradient Material with Hybrid Manufacturing: Directed Energy Deposition & Machining |
Author(s) |
Wei Li, Runyu Zhang, Kishore Mysore Nagaraja, Ning Bian, Hongbing Lu |
On-Site Speaker (Planned) |
Wei Li |
Abstract Scope |
Directed energy deposition (DED) is commonly used to fabricate metallic functionally gradient materials (FGMs). Due to unsatisfied surface finish and dimensional accuracy, DED is always combined with machining. The combined process is named hybrid manufacturing. Different mechanical properties of two materials generate heterogeneous mechanical properties in FGM, which can seriously influence the cutting mechanism, such as cutting force, cutting temperature, surface roughness, and tool wear, especially if one material is a hard-to-cut material. In this study, SS316L and IN718 are fabricated into the FGM specimen with DED process. Various material tests are performed to characterize material properties of the FGM specimen. After that, a tungsten carbide (WC) milling cutter is used to machine the FGM specimen with dry peripheral milling. The surface roughness, cutting force, cutting temperature, and the tool wear are studied to investigate the machining mechanism. Additionally, a multi-physics and multi-materials modeling framework is being established for simulating the hybrid manufacturing. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |