Research on Mechanisms and Controlling Methods of Macro Defects in TC4 Alloy Fabricated by Wire Additive Manufacturing.
作者： Lei Ji , Jiping Lu , Shuiyuan Tang , Qianru Wu , Jiachen Wang
DOI: 10.3390/MA11071104
关键词:
摘要: Wire feeding additive manufacturing (WFAM) has broad application prospects because of its advantages low cost and high efficiency. However, with the mode lateral wire feeding, including laser manufacturing, gas tungsten arc etc., it is easy to generate macro defects on surface components anisotropy melted wire, which limits promotion WFAM. In this work, proposed investigate mechanisms defects. The results illustrate that defect forms mainly include side spatters, collapse, poor flatness, unmelted wire. It was found heat input, layer thickness, tool path, curvature can have an impact Side spatters are most serious defects, droplets cannot be transferred center molten pool in mode. This research indicates controlled by optimizing process parameters. Finally, block parts without were fabricated, meaningful for further
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