Abstract
The interest in producing cost-effective 3D printed metallic materials is increasing day by day. One of these methods, which has gained much attention recently, is the fused deposition modelling (FDM) method. The parameters used in the FDM method have significant effects on the printed part properties. In this study, CuSn10 bronze alloy was successfully produced. The printing speed and layer thickness were investigated as the printing process parameters, and their effect on morphological properties was characterized by using SEM. As a result, it was observed that the formation of printing-induced voids was prevented by applying a layer thickness of 0.2 mm. Additionally, by increasing printing speed, a slight decrease in product density was observed. Following determination of 3D printing parameters which give the highest printed part density, the parts were debound in hexane solution via solvent debinding. Finally, the parts were sintered at 850, 875 and 900 °C for 5 h to examine effect of sintering temperature on density, porosity, shape deformation and mechanical properties. Although partial slumping started to form over 875 °C, the highest density (94.19% of theoretical density) and strength (212 ± 17.72 MPa) were obtained by using 900 °C as the sintering temperature.
Highlights
The 3D printing process, known as additive manufacturing (AM) method, is the production of parts layer by layer with a device that uses computer-aided design (CAD)
The results show the effectiveness of the fused deposition modeling (FDM) method for the fabrication of bronze parts with comparable mechanical properties in a complex shape
The effect of printing parameters on the properties of 3D printed bronze parts by screw-based extrusion technique was investigated as printing parameters, printing speed and layer thickness between 20–60 mm/s, and 0.2–0.6 mm were employed, respectively
Summary
The 3D printing process, known as additive manufacturing (AM) method, is the production of parts layer by layer with a device that uses computer-aided design (CAD). This process does not require molding, cutting, drilling, or machine processes [1,2]. Threedimensional printing has many advantages and allows producing sophisticated tools without material and energy waste This method provides low-cost and simple printing at home and in laboratories [3]. One of the relatively novel alternative methods is fused deposition modeling (FDM) In this technique, the feedstock contains metallic powders and polymeric binders. One of the important points in the production of metallic parts with the FDM method is the production of parts with the highest possible density after printing
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