Abstract
Metal fused-coating is a novel additive manufacturing technology used to building complex components. In order to determine good metallurgical bonding between layers, a two-dimensional model was established to predict the temperature needed to promote the metallurgical bonding of multi-layer specimens. The temperature of the cladding process was tracked and measured by the thermal imaging system. The influence of heat transfer on the forming characteristics of the fusion track was studied systematically. In addition, the maximum remelting depth of the liquid-solid interface was evaluated and the interlaminar bonding state was further confirmed by the formation of three-dimensional samples and optical microscopy images. This work may help to develop metal fused-coating to the produce effective process control and performance prediction.
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