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- W3005486100 abstract "Macrosegregation is rather serious during laser-arc hybrid welding (LAHW) due to poor arc penetration ability. Here we presented a simple and effective method to improve solute transfer and mitigate macrosegregation by using beam oscillation. When oscillating amplitude A ≥0.8 mm and frequency f ≥ 300 Hz, the macrosegregation of the overall weld cross-section was 300% lower than that of the non-oscillation weld, and the longitudinal section reduced by 220%. The reduction of macrosegregation was attributed to the stirring and vortex suction effect produced by high-frequency oscillating beam, which improved turbulent flow and the convection of molten pool to homogenize the alloying elements of hybrid weld." @default.
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- W3005486100 date "2020-04-01" @default.
- W3005486100 modified "2023-10-15" @default.
- W3005486100 title "A pathway to mitigate macrosegregation of laser-arc hybrid Al-Si welds through beam oscillation" @default.
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- W3005486100 doi "https://doi.org/10.1016/j.ijheatmasstransfer.2020.119467" @default.
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