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Compositionally graded metals: A new frontier of additive manufacturing

Published online by Cambridge University Press:  28 August 2014

Douglas C. Hofmann*
Affiliation:
Engineering and Science Directorate, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA; and Keck Laboratory of Engineering Sciences, California Institute of Technology, Pasadena, CA 91125, USA
Joanna Kolodziejska
Affiliation:
Keck Laboratory of Engineering Sciences, California Institute of Technology, Pasadena, CA 91125, USA
Scott Roberts
Affiliation:
Engineering and Science Directorate, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA; and Keck Laboratory of Engineering Sciences, California Institute of Technology, Pasadena, CA 91125, USA
Richard Otis
Affiliation:
Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA 16802, USA
Robert Peter Dillon
Affiliation:
Engineering and Science Directorate, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
Jong-Ook Suh
Affiliation:
Engineering and Science Directorate, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
Zi-Kui Liu
Affiliation:
Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA 16802, USA
John-Paul Borgonia
Affiliation:
Engineering and Science Directorate, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
*
a)Address all correspondence to this author. e-mail: dch@jpl.nasa.gov
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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.

Type
Research Article
Copyright
Copyright © Materials Research Society 2014 

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