DED process parameters optimization via experiments
The additive manufacturing (AM) technique Directed Energy Deposition (DED) specializes in mending, quick prototyping, and low-volume part manufacturing. Due to its tremendous advantages, it is commonly employed in various sectors, such as aerospace, healthcare, and the military. A common material to...
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| Format: | Final Year Project |
| Language: | English |
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Nanyang Technological University
2023
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| Online Access: | https://hdl.handle.net/10356/167312 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | The additive manufacturing (AM) technique Directed Energy Deposition (DED) specializes in mending, quick prototyping, and low-volume part manufacturing. Due to its tremendous advantages, it is commonly employed in various sectors, such as aerospace, healthcare, and the military. A common material to work with is 316L stainless steel because of its excellent tensile and corrosion-resistant qualities.
For this project, 5 process parameters (Laser Power, Scanning Speed, Powder Mass flow rate, XY-Incremental ratio, and Z Incremental ratio) were varied with different values to get a correlation with the microstructure parameters (Grain Area, Grain Ellipse aspect ratio, and Grain angle) and the mechanical property (Ultimate Tensile Strength) of a multi-layer multi-track deposition.
The microstructure was analysed using Electron Backscatter Diffraction (EBSD) method and a relationship between the process parameters, microstructure parameters, and the ultimate tensile strength was concluded. |
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