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Developing Gradient Metal Alloys through Radial Deposition Additive Manufacturing

Hofmann, Douglas C. and Roberts, Scott and Otis, Richard and Kolodziejska, Joanna and Dillon, R. Peter and Suh, Jong-ook and Shapiro, Andrew A. and Liu, Zi-Kui and Borgonia, John-Paul (2014) Developing Gradient Metal Alloys through Radial Deposition Additive Manufacturing. Scientific Reports, 4 (6). Art. No. 5357. ISSN 2045-2322. PMCID PMC4062900.

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Interest in additive manufacturing (AM) has dramatically expanded in the last several years, owing to the paradigm shift that the process provides over conventional manufacturing. Although the vast majority of recent work in AM has focused on three-dimensional printing in polymers, AM techniques for fabricating metal alloys have been available for more than a decade. Here, laser deposition (LD) is used to fabricate multifunctional metal alloys that have a strategically graded composition to alter their mechanical and physical properties. Using the technique in combination with rotational deposition enables fabrication of compositional gradients radially from the center of a sample. A roadmap for developing gradient alloys is presented that uses multi-component phase diagrams as maps for composition selection so as to avoid unwanted phases. Practical applications for the new technology are demonstrated in low-coefficient of thermal expansion radially graded metal inserts for carbon-fiber spacecraft panels.

Item Type:Article
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Additional Information:© 2014 Macmillan Publishers Limited. This work is licensed under a Creative Commons Attribution-NonCommercial- NoDerivs 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit Received: 4 February 2014; Accepted: 27 May 2014; Published: 19 June 2014. This research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration (NASA) and funded through theOffice of the Chief Technologist. The authors acknowledge G. Agnes, C. Bradford, P. Gardner, C. Morandi, J. Mulder, P. Willis, and RPM for useful discussions. The authors cite no conflict of interest.
Funding AgencyGrant Number
Subject Keywords:Engineering; Materials science
Issue or Number:6
PubMed Central ID:PMC4062900
Record Number:CaltechAUTHORS:20140717-155423218
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Official Citation:Hofmann, D. C., Roberts, S., Otis, R., Kolodziejska, J., Dillon, R. P., Suh, J.-o., . . . Borgonia, J.-P. (2014). Developing Gradient Metal Alloys through Radial Deposition Additive Manufacturing. [Article]. Sci. Rep., 4. doi: 10.1038/srep05357
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:47310
Deposited By: Jason Perez
Deposited On:17 Jul 2014 23:49
Last Modified:03 Oct 2019 06:52

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