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Comparison of Microstructural Response to Heat Treatment of Inconel 718 Prepared by Three Different Metal Additive Manufacturing Processes

  • The 2nd Asia-Pacific International Conference on Additive Manufacturing (APICAM 2019)
  • Published:
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Abstract

Optimization of metallic components fabricated from age hardenable alloys relies on the use of effective heat treatments. As additive manufacturing (AM) is taking its place as “another tool in the toolbox” for fabrication of metallic components, numerous processes are under development differing mainly by the starting feedstock and heat source. In parallel with these efforts is the optimization of the post-processing heat treatment to obtain the required properties. Due to differences in the various processes, it is expected that different microstructures will form in the AM specimens possibly affecting the mechanical behavior. To address optimization of heat treatments requires an understanding of how the starting microstructure responds to heat treatments. This study looks at inherent differences in the response of Inconel 718 to heat treatments developed for wrought 718. Three different AM processes were used to fabricate the samples in this study.

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Acknowledgements

This manuscript in based in part on the Keynote talk given at the Second Asia-Pacific International Conference on AM (APICAM) held in Melbourne, Australia, in July 2019.

Funding

Funding was provided in part from the following NASA-Marshal Space Flight Grants: 80MSFC19M0017, PC 117217140, 80MSFC19M0015 and PC 11666785. Samples used in this study were obtained from the NASA-Marshall Space Flight Center, DM3D, DMG-Mori, Alabama Laser and Keystone Synergistic Enterprises. The data presented have been selected from on-going research within my group over the past several years with many student contributions.

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  1. Department of Mechanical and Aerospace Engineering, The University of Alabama in Huntsville, Huntsville, AL, 35899, USA

    Judy Schneider

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  1. Judy Schneider
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Correspondence to Judy Schneider.

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Schneider, J. Comparison of Microstructural Response to Heat Treatment of Inconel 718 Prepared by Three Different Metal Additive Manufacturing Processes. JOM 72, 1085–1091 (2020). https://doi.org/10.1007/s11837-020-04021-x

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  • DOI: https://doi.org/10.1007/s11837-020-04021-x

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