Numerical simulation and experimental research on fused-coating additive manufacturing of Sn63Pb37 thin-walled structures

Du, Jiaojiao; Wei, Zhengying; Zhang, Yubin; Zhou, Shanlin

doi:10.1007/s00339-019-3173-9

Cited by 3 publications

(1 citation statement)

References 12 publications

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“…Zhao [27] studied the driving forces of the preheating arc during the fused-coating forming process and predicted the cross-sectional morphology of the deposition layer. Du developed a 3D-thermal FVM model to calculate the temperature field and macromorphology of parts [28]. However, there was relatively little theoretical analysis of microstructure morphology during fused coating.…”

Section: Introductionmentioning

confidence: 99%

An Analysis of the Mapping Relationship between Microstructure and Solidification Parameters during Aluminum Fused Coating

Zhao,

Zhang,

Yang

2023

Metals

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Metal fused-coating technology has the advantages of both low cost and high efficiency and is a new additive manufacturing technology in recent years. The previous studies were mainly aimed at the optimization of process parameters and the control of the surface quality of parts, while there were few theoretical analyses on the microstructure morphology after solidification. A three-dimensional transient numerical model was established to calculate temperature gradient and solidification rate, considering the changes in material physical properties with temperature during the calculation process. The temperature gradient on the substrate surface is jointly affected by the melt flowing out of the nozzle and the welding arc. It was found that the solidification front of the aluminum alloy was in an unstable state during the coating process. When the value of G/R decreases, the microstructure of the solidification interface gradually changes from columnar crystals to columnar dendrites and equiaxial crystals. The microstructure at the bottom of both the molten pool and coating layer is columnar crystal, while the microstructure at the upper part is equiaxed crystal.

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Section: Introductionmentioning

confidence: 99%