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- W122115952 abstract "A novel rapid prototyping method for metals named 3D micro welding (3DMW) was demonstrated. It is a combined process of a micro-TIG welding and a layered manufacturing method. Small metal beads with ~1 mm diameter are formed by applying a micro arc to the top of a metal wire of 200 µm in diameter. A fused bead is welded to a metal substrate or previously formed beads. By continuing this process and stacking beads layer by layer under the control of a computer system, 3D objects of various metals and alloys can be formed. The system consists of four sections; a forming stage, an arc control unit, system control computers, and a video monitoring device. A 3D model is designed on CAD software and sliced into thin layers by using commercial slicing software. After the slicing process, the arrangement of beads in a layer is calculated by in-house developed software. In this study, freeform fabrication of Inconel alloy 600 and Ti-Al based intermetallic alloy were demonstrated. The mechanical properties of formed samples with Inconel alloy 600 were measured and the phase composition of samples of Ti-Al based intermetallics alloy were analyzed. The yield strength, density and Vickers hardness of Inconel 600 objects show comparable values to the commercial alloys. These superior properties suggest that actual micro components or tools of metals with high strength, high wear, heat and oxidation resistances can be formed without molds by 3DMW." @default.
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- W122115952 date "2008-12-01" @default.
- W122115952 modified "2023-09-23" @default.
- W122115952 title "Freeform Fabrication Method of Alloys and Intermetallic Compounds by 3D Micro Welding" @default.
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