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Recent advances in additive manufacturing technology have made it possible to produce components with complex geometric structures using the Laser Powder Bed Fusion(L-PBF) process. However, there are still limitations when manufacturing extreme geometric shapes, such as thin wall. The thin walls are vulnerable to thermal deformation due to local heat accumulation in L-PBF. In this study, we applied a pulse mode with low thermal effect to manufacture ultra thin-wall structures using Inconel 718 in L-PBF and manufacturing characteristics were compared with the continuous wave emission mode. Then the process and mechanical properties of the pulse mode were analyzed through unit specimens and tensile specimens.
Bae et al. (Thu,) studied this question.
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