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Recyclability Study on Inconel 718 and Ti-6Al-4V Powders for Use in Electron Beam Melting

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Abstract

Powder bed-based additive manufacturing technologies offer a big advantage in terms of reusability of the powders over multiple cycles that result in cost savings. However, currently there are no standards to determine the factors that govern the powder reuse times. This work presents the results from a recyclability study conducted on Inconel 718 and Ti-6Al-4V powders. It has been found that the Inconel 718 powders are chemically stable over a large number of cycles and their reuse time is limited by physical characteristics of powders such as flowability. Ti-6Al-4V, on the other hand, finds its reuse time governed by the oxygen pick up that occurs during and in between build cycles. The detailed results have been presented.

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Acknowledgments

Research was sponsored the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Advanced Manufacturing Office, under contract DE-AC05-00OR22725 with UT-Battelle, LLC. This research at the Oak Ridge National Laboratory’s High Temperature Materials Laboratory was sponsored by the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Vehicle Technologies Program.

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Authors and Affiliations

  1. Manufacturing Demonstration Facility, Oak Ridge National Laboratory, Oak Ridge, TN, USA

    Peeyush Nandwana (Postdoctoral Fellow, Deposition Science and Technology Group), William H. Peter (Deputy Director, Manufacturing Demonstration Facility), Ryan R. Dehoff (Group Leader, Deposition Science and Technology Group), Larry E. Lowe (Staff Technician), Michael M. Kirka (Staff Scientist, Deposition Science and Technology Group) & Sudarsanam S. Babu (Governor’s Chair)

  2. Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA

    Peeyush Nandwana (Postdoctoral Fellow, Deposition Science and Technology Group), Ryan R. Dehoff (Group Leader, Deposition Science and Technology Group), Larry E. Lowe (Staff Technician) & Michael M. Kirka (Staff Scientist, Deposition Science and Technology Group)

  3. Energy and Transportation Science Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA

    William H. Peter (Deputy Director, Manufacturing Demonstration Facility) & Sudarsanam S. Babu (Governor’s Chair)

  4. Arcam AB, Mölndal, Sweden

    Francisco Medina (Senior Specialist in Materials Development Group)

  5. Department of Mechanical, Aerospace and Biomedical Engineering, The University of Tennessee, Knoxville, TN, USA

    Sudarsanam S. Babu (Governor’s Chair)

Authors
  1. Peeyush Nandwana
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  2. William H. Peter
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  3. Ryan R. Dehoff
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  4. Larry E. Lowe
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  5. Michael M. Kirka
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  6. Francisco Medina
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  7. Sudarsanam S. Babu
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Corresponding author

Correspondence to Peeyush Nandwana.

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Manuscript submitted August 4, 2015.

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Nandwana, P., Peter, W.H., Dehoff, R.R. et al. Recyclability Study on Inconel 718 and Ti-6Al-4V Powders for Use in Electron Beam Melting. Metall Mater Trans B 47, 754–762 (2016). https://doi.org/10.1007/s11663-015-0477-9

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  • DOI: https://doi.org/10.1007/s11663-015-0477-9

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