A Review on Wire-Fed Directed Energy Deposition Based Metal Additive Manufacturing

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Abstract

Metal additive manufacturing has reached a level where products and components can be directly fabricated for applications requiring small batches and customized designs, from tinny body implants to long pedestrian bridges over rivers. Wire-fed directed energy deposition based additive manufacturing enables fabricating large parts in a cost-effective way. However, achieving reliable mechanical properties, desired structural integrity, and homogeneity in microstructure and grain size is challenging due to layerwise-built characteristics. Manufacturing processes, alloy composition, process variables, and post-processing of the fabricated part strongly affect the resultant microstructure and, as a consequence, component serviceability. This paper reviews the advances in wire-fed directed energy deposition, specifically wire arc metal additive processes, and the recent efforts in grain tailoring during the process for the desired size and shape. The paper also addresses modeling methods that can improve the qualification of fabricated parts by modifying the microstructure and avoid repetitive trials and material waste.

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APA

Özel, T., Shokri, H., & Loizeau, R. (2023, February 1). A Review on Wire-Fed Directed Energy Deposition Based Metal Additive Manufacturing. Journal of Manufacturing and Materials Processing. MDPI. https://doi.org/10.3390/jmmp7010045

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