Abstract
This study investigates high-efficiency and high-quality additive manufacturing (AM) technology using a combination of a high-power diode laser and hot-wire method and three kinds of filler wires: stainless steel, Ni-based alloy, and 5000-series Al alloy. The hot-wire method has a high degree of freedom for selecting wire materials because the wire can be heated to just below its melting point by only Joule heating, independent of the main heat source of a high-power diode laser. A simple calculation method to predict the appropriate wire current is proposed and confirmed by hot-wire feeding experiments without laser irradiation. The optimized AM conditions for the three materials were obtained using the appropriate wire current calculated by the proposed method, and three-layer deposited samples were fabricated and evaluated. High-speed imaging was performed to monitor the clear wire melting phenomena and molten pool formation during AM processing.
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Zhu, S., Nakahara, Y., Yamamoto, M. et al. Additive manufacturing phenomena of various wires using a hot-wire and diode laser. Weld World 66, 1315–1327 (2022). https://doi.org/10.1007/s40194-022-01273-w
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DOI: https://doi.org/10.1007/s40194-022-01273-w