Compositionally graded metals: A new frontier of additive manufacturing

Creators: Hofmann, Douglas C.; Kolodziejska, Joanna; Roberts, Scott; Otis, Richard; Dillon, Robert Peter; Suh, Jong-ook; Liu, Zi-Kui; Borgonia, John-Paul

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Abstract

The current work provides an overview of the state-of-the-art in polymer and metal additive manufacturing and provides a progress report on the science and technology behind gradient metal alloys produced through laser deposition. The research discusses a road map for creating gradient metals using additive manufacturing, demonstrates basic science results obtainable through the methodology, shows examples of prototype gradient hardware, and suggests that Compositionally Graded Metals is an emerging field of metallurgy research.

Additional Information

© 2014 Materials Research Society. Received 8 April 2014; accepted 16 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 the Office of the Chief Technologist. The authors acknowledge A. Eilenberg, G. Agnes, A. Shapiro, C. Bradford, P. Gardner, C. Morandi, J. Mulder, P. Willis, and RPM Innovations for useful discussions. Richard Otis and Zi-Kui Liu acknowledge partial funding of this work by the Open Manufacturing Program of the Defense Advanced Research Projects Agency's Center for Innovative Materials Processing through Direct Digital Deposition at Penn State under Grant N00014-12-1-0840 from the Office of Naval Research.

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