Results 11 to 20 of about 13,736 (216)

Directed Energy Deposition (DED) Process: State of the Art

International Journal of Precision Engineering and Manufacturing-Green Technology, 2021
AbstractMetal additive manufacturing technologies, such as powder bed fusion process, directed energy deposition (DED) process, sheet lamination process, etc., are one of promising flexible manufacturing technologies due to direct fabrication characteristics of a metallic freeform with a three-dimensional shape from computer aided design data.
Dong-Gyu Ahn
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Anisotropic properties of directed energy deposition (DED)-processed Ti–6Al–4V [PDF]

Journal of Manufacturing Processes, 2016
Abstract Directed energy deposited (DED) Ti–6Al–4V components and prototypes are quickly growing in prevalence in aerospace and biomedical industries for their increased strength and fast processing time. However, one of the remaining challenges in DED processes, particularly laser engineered net shaping (LENS), is the characterization of the ...
Sarah Wolff, Taekyung Lee, Eric Faierson, Kornel Ehmann, Jian Cao   +4 more
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Subcutaneous coding via laser directed energy deposition (DED-LB) for unalterable component identification

Materials & Design
Part identification has become a priority in manufacturing, especially when it comes to the additive manufacturing (AM) industry, where the counterfeit printing of almost any digitalized component is possible.
Aizpea Urresti, Jon Iñaki Arrizubieta, Aitzol Lamikiz, Ibon Holgado, Naiara Ortega   +4 more
doaj   +3 more sources

The Effect of Heat Accumulation on the Local Grain Structure in Laser-Directed Energy Deposition of Aluminium

Metals, 2022
The energy used to melt the material at each layer during laser-directed energy deposition (L-DED) accumulates in the solidified layers upon layer deposition and leads to an increase in the temperature of the part with an increasing number of layers ...
Christian Hagenlocher, Patrick O’Toole, Wei Xu, Milan Brandt, Mark Easton, Andrey Molotnikov   +5 more
doaj   +1 more source

2000W Blue laser directed energy deposition of AlSi7Mg: process parameters, molten pool characteristics, and appearance defects

Virtual and Physical Prototyping, 2023
Aluminium alloys are difficult to be manufactured by directed energy deposition (DED) with the widely used infrared laser because of the low absorptivity.
Zijue Tang, Qianglong Wei, Zhenyang Gao, Huihui Yang, An Wang, Le Wan, Cheng Luo, Yi Wu, Haowei Wang, Hongze Wang   +9 more
doaj   +1 more source

Preventing Evaporation Products for High-Quality Metal Film in Directed Energy Deposition: A Review

Metals, 2021
Directed energy deposition (DED), a type of additive manufacturing (AM) is a process that enables high-speed deposition using laser technology. The application of DED extends not only to 3D printing, but also to the 2D surface modification by direct ...
Kang-Hyung Kim, Chan-Hyun Jung, Dae-Yong Jeong, Soong-Keun Hyun   +3 more
doaj   +1 more source

Effects of Gravity and Non-Perpendicularity during Powder-Fed Directed Energy Deposition of Ni-Based Alloy 718 through Two Types of Coaxial Nozzle [PDF]

, 2020
The consequences of gravity and the nozzle inclination angle in the powder-fed Directed Energy Deposition (DED) process were examined in this study.
Alberdi, Amaia, Lamikiz, Aitzol, Ortiz, Mikel, Ramiro-Castro, Pedro   +3 more
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In-process spectroscopic detection of chromium loss during Directed Energy Deposition of alloy 718

Materials & Design, 2020
In this work, a fast optical spectrometer was used to monitor the Directed Energy Deposition (DED) process, during the deposition of Alloy 718 samples with different laser power, thus different energy inputs into the material.
Agnieszka Kisielewicz, Esmaeil Sadeghi, Fredrik Sikström, Anna-Karin Christiansson, Gianfranco Palumbo, Antonio Ancona   +5 more
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Plastic deformation behavior and dynamic recrystallization of Inconel 625 superalloy fabricated by directed energy deposition

Materials & Design, 2020
In this study, the hot plastic deformation behavior and dynamic recrystallization (DRX) phenomenon of Inconel 625 superalloy prepared by directed energy deposition (DED) are investigated by carrying out hot compression tests.
Y.L. Hu, X. Lin, Y.L. Li, S.Y. Zhang, X.H. Gao, F.G. Liu, X. Li, W.D. Huang   +7 more
doaj   +1 more source

A Study of Different Deposition Strategies in Direct Energy Deposition (DED) Processes

Procedia Manufacturing, 2020
Abstract The stepover of adjacent deposition lines (or beads), when stacking layers to build a 3D-solid shape, is found to be of great importance to minimize voidage and so, improving density of parts produced by the Directed Energy Deposition (DED) process.
Kandice S.B. Ribeiro, Fábio E. Mariani, Reginaldo T. Coelho   +2 more
openaire   +1 more source