Application of Directed Energy Deposition-Based Additive Manufacturing in Repair

By A. Saboori, A. Aversa, G. Marchese, Sara Biamino, Mariangela Lombardi, Paolo Fino. Applied Sciences, 2019

444 citations recorded by the source corpus.

In the circular economy, products, components, and materials are aimed to be kept at the utility and value all the lifetime. For this purpose, repair and remanufacturing are highly considered as proper techniques to return the value of the product during its life. Directed Energy Deposition (DED) is a very flexible type of additive manufacturing (AM), and among the AM techniques, it is most suitable for repairing and remanufacturing automotive and aerospace components. Its application allows damaged component to be repaired, and material lost in service to be replaced to restore the part to its original shape. In the past, tungsten inert gas welding was used as the main repair method. However, its heat affected zone is larger, and the quality is inferior. In comparison with the conventional welding processes, repair via DED has more advantages, including lower heat input, warpage and distortion, higher cooling rate, lower dilution rate, excellent metallurgical bonding between the deposited layers, high precision, and suitability for full automation. Hence, the proposed repairing method based on DED appears to be a capable method of repairing. Therefore, the focus of this study was to present an overview of the DED process and its role in the repairing of metallic components. The outcomes of this study confirm the significant capability of DED process as a repair and remanufacturing technology.

Subfields: Automotive Engineering, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/c8dd94510416c282d9f488daa1a590d741a02336

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Automotive Engineering

1. G. Marchese
2. A. Aversa
3. Mariangela Lombardi
4. Paolo Fino
5. A. Saboori
6. Sara Biamino

In Mechanical Engineering

1. A. Saboori
2. G. Marchese
3. A. Aversa
4. Mariangela Lombardi
5. Paolo Fino
6. Sara Biamino

Citations in the corpus

• Microstructure and Mechanical Properties of AISI 316L Produced by Directed Energy Deposition-Based Additive Manufacturing: A Review (2020, background): “The laser-powder DED process has gained considerable interest in recent years thanks to the possibility of repairing parts and production of functionally graded materials (FGM) by varying the alloying element content [25].”
• An investigation on the effect of deposition pattern on the microstructure, mechanical properties and residual stress of 316L produced by Directed Energy Deposition (2020, background): “AM technologies has its own unique advantages such as the possibility to produce the Functionally-Graded Materials (FGM) [14], repair of high-value parts [15] and surface coating of the components exposed to heavy loadings like die and moulds or harsh conditions like corrosive,”