| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
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| Symposium
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Additive Manufacturing and Innovative Powder/Wire Processing of Multifunctional Materials
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| Presentation Title |
Optimizing DED Printing of Nickel-Silicon-Based Alloys Using Functionally Graded Inconel 625 Base Layers
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| Author(s) |
Ibrahim Mohammad, Geir Grasmo, Ragnhild Elizabeth Aune |
| On-Site Speaker (Planned) |
Ibrahim Mohammad |
| Abstract Scope |
The limited availability of alloy powders for Additive Manufacturing (AM) prompted an investigation into the printability of nickel-silicon-based alloys, more specifically NiSi11.9Co3.4, NiSi10.15V4.85, NiSi11.2Mo1.8, and NiSi10.78Ti1.84B0.1, using Directed Energy Deposition (DED). Given the inherent brittleness of nickel-silicon alloys and the challenges posed by the differences in their Coefficient of Thermal Expansion (CTE), a functionally graded printing technique was employed. This technique involved initially depositing Inconel 625 as a base layer, followed by one of the nickel-silicon-based alloy variants using Laser metal deposition. All alloys except NiSi10.78Ti1.84B0.1 were successfully printed into 30mm tall cylinders. The printed structures were sectioned, and the resulting microstructures characterized using Light Optical Microscopy (LOM), Scanning Electron Microscopy (SEM), and X-ray Diffraction (XRD). The obtained results indicated that the functionally graded approach significantly improved the printability and structural integrity of the alloys, confirming that Inconel 625 is a viable base material for DED printing of nickel-silicon-based alloys. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Other |