Manufacturing of 3D objects via Directed Energy Deposition

Directed energy deposition (DED) is capable of directly writing 3D metallic objects from a computer model. DED utilizes a flowing aerosol of metal powder and a laser to create a molten deposit which subsequently solidifies. An X-Y-Z stage is used to move the relative position of the depositing material and thus allow the creation of a 3D object. We are studying the influence of processing parameters such a laser power, write speed, and powder feed rate on the microstructure and geometry of the resulting deposit.

This work was supported by Los Alamos National Laboratory.


Publications

  1. C. Knapp, T. Lienert, P. Burgardt, D. Kovar, “A Model to Predict Deposition Parameters for Directed Energy Deposition: Part I Theory and Modeling,” Rapid Prototyping Journal, 25 [6] 998-1006 (2019). https://doi.org/10.1108/RPJ-08-2018-0221

  2. C. M. Knapp, T.J. Lienert, J.S. Carpenter, and D. Kovar, “In Situ Monitoring of Directed Energy Deposition,” Proceedings of the Materials Science and Technology Conference 2016, pp. 115-122, Salt Lake City, UT, October 23-27, 2016. Link

  3. C. M. Knapp, T.J. Lienert, J.S. Carpenter, and D. Kovar, “In Situ Monitoring of Directed Energy Deposition,” Proceedings of the Materials Science and Technology Conference 2016, pp. 115-122, Salt Lake City, UT, October 23-27, 2016. Link