About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Symposium
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2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Presentation Title |
Investigating the Effect of Workpiece Shape on Thermal History and Coating Properties in High-Speed Coatings Using Laser Directed Energy Deposition |
Author(s) |
Shiho Takemura, Takanori Mori, Yoko Hirono, Yasuhiro Kakinuma |
On-Site Speaker (Planned) |
Shiho Takemura |
Abstract Scope |
Directed Energy Deposition (DED) can be used for metal coating as well as parts fabrication because it can supply powder and laser on the part surface freely. As for high-speed coating using DED, it has advantages such as high efficiency and reduced heat-affected zone. However, because of rapid heat input and cooling, it is considered that the thermal history of the coating layer becomes more sensitive to the coated workpiece shape, which can affect the coating properties. In this research, the effect of workpiece shape on thermal history during high-speed coating using DED is numerically analyzed. A thermal simulation of rotational coating is developed, where elements are added and the heat input area is moved according to laser scanning and workpiece rotation. Additionally, experiments are conducted to investigate the relationship between thermal history and coating quality and hardness. In this study, solid and hollow cylinders are selected as workpieces. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |