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

Peeyush Nandwana, William H. Peter, Ryan R. Dehoff, Larry E. Lowe, Michael M. Kirka, Francisco Medina, Sudarsanam S. Babu

Research output: Contribution to journalArticlepeer-review

119 Scopus citations

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.

Original languageEnglish
Pages (from-to)754-762
Number of pages9
JournalMetallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
Volume47
Issue number1
DOIs
StatePublished - Feb 1 2016

Funding

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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