TY  - EJOU
AU  - Aw, Beng-Loon 

TI  - High-Resolution Multi-Metal 3D Printing: A Novel Approach Using Binder Jet Printing and Selecting Laser Melting in Powder Bed Fusion
T2  - The International Conference on Computational \& Experimental Engineering and Sciences

PY  - 2024
VL  - 32
IS  - 1
SN  - 1933-2815

AB  - This study introduces a novel method that combines Binder Jet Printing (BJP) and Selective Laser Melting (SLM) techniques to achieve unprecedented high-speed and high-resolution 3D printing of fine metal powders in Laser Powder Bed Fusion (LPBF). Our approach comfortably attains a resolution of 0.2 mm, enabling the selective deposition of fine powder (D50: 30 µm) made from multiple materials within a single print layer. We demonstrate the capability of this technique through the printing of a composite structure composed of copper alloy and 18Ni300 Maraging tool steel, showcasing its potential for fast-cooling tooling applications. The quality of fusion between the different materials was meticulously analyzed through cross-sectional observation and further substantiated by Scanning Electron Microscopy (SEM) with Energy Dispersive X-ray Spectroscopy (EDX) analysis to study the migration of various elements within the printed sample. Additionally, we report the successful hardening of the demonstrator components through aging, achieving a hardness of 50 HRC. This development not only marks a significant advancement in additive manufacturing technology but also broadens the spectrum of applications for multi-material 3D printing, including different polymeric materials for soft robotics.
KW  - Multi-material; multi-metal; metal additive manufacturing; laser bed powder fusion; selective laser melting; binder jet printing

DO  - 10.32604/icces.2024.011990