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Compositionally graded metals: A new frontier of additive manufacturing

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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.

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ACKNOWLEDGMENTS

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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Authors and Affiliations

  1. Engineering and Science Directorate, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, 91109, USA

    Douglas C. Hofmann, Scott Roberts, Robert Peter Dillon, Jong-Ook Suh & John-Paul Borgonia

  2. Keck Laboratory of Engineering Sciences, California Institute of Technology, Pasadena, CA, 91125, USA

    Douglas C. Hofmann, Joanna Kolodziejska & Scott Roberts

  3. Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, 16802, USA

    Richard Otis & Zi-Kui Liu

Authors
  1. Douglas C. Hofmann
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  2. Joanna Kolodziejska
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  3. Scott Roberts
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  4. Richard Otis
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  5. Robert Peter Dillon
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  6. Jong-Ook Suh
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  7. Zi-Kui Liu
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  8. John-Paul Borgonia
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Correspondence to Douglas C. Hofmann.

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Hofmann, D.C., Kolodziejska, J., Roberts, S. et al. Compositionally graded metals: A new frontier of additive manufacturing. Journal of Materials Research 29, 1899–1910 (2014). https://doi.org/10.1557/jmr.2014.208

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  • DOI: https://doi.org/10.1557/jmr.2014.208

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