The Influence of Powder Reuse on the Properties of Nickel Super Alloy ATI 718™ in Laser Powder Bed Fusion Additive Manufacturing

Christopher Rock; Christopher Ledford; Matias Garcia-Avila; Harvey West; Victoria M. Miller; Mark Pankow; Ryan Dehoff; Tim Horn

doi:10.1007/s11663-020-02040-2

The Influence of Powder Reuse on the Properties of Nickel Super Alloy ATI 718™ in Laser Powder Bed Fusion Additive Manufacturing

Christopher Rock, Christopher Ledford, Matias Garcia-Avila, Harvey West, Victoria M. Miller, Mark Pankow, Ryan Dehoff, Tim Horn

Manufacturing Science Division

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

Gas-atomized nickel alloy ATI 718™ powders with a nominal particle distribution of 15 to 45 µm were used in a laser powder bed fusion (LPBF) additive manufacturing (AM) process for ten sequential builds without refreshing with new powder. The repeated feedstock use caused the particle size distribution, particle morphology, and oxygen content to change in comparison to virgin powder. Unusual particle morphologies were observed in the powder with repeated use when compared to virgin gas-atomized feedstock. Particles after use were found to contain surface features such as films and spots, which consisted of aluminum oxides and likely contributed to increasing the oxygen content in the recycled feedstock powder.

Original language	English
Pages (from-to)	676-688
Number of pages	13
Journal	Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
Volume	52
Issue number	2
DOIs	https://doi.org/10.1007/s11663-020-02040-2
State	Published - Apr 2021

Funding

The authors would like to thank Allegheny Technologies Incorporated (ATI), Pittsburgh, PA, for supporting this project. This work was performed in part at the Analytical Instrumentation Facility (AIF) at North Carolina State University, which is supported by the State of North Carolina and the National Science Foundation (Award Number ECCS-1542015). The AIF is a member of the North Carolina Research Triangle Nanotechnology Network (RTNN), a site in the National Nanotechnology Coordinated Infrastructure (NNCI). The authors would like to thank Allegheny Technologies Incorporated (ATI), Pittsburgh, PA, for supporting this project. This work was performed in part at the Analytical Instrumentation Facility (AIF) at North Carolina State University, which is supported by the State of North Carolina and the National Science Foundation (Award Number ECCS-1542015). The AIF is a member of the North Carolina Research Triangle Nanotechnology Network (RTNN), a site in the National Nanotechnology Coordinated Infrastructure (NNCI).

Funders	Funder number
National Science Foundation	ECCS-1542015
Allegheny Technologies Incorporated
North Carolina State University

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Rock, C., Ledford, C., Garcia-Avila, M., West, H., Miller, V. M., Pankow, M., Dehoff, R., & Horn, T. (2021). The Influence of Powder Reuse on the Properties of Nickel Super Alloy ATI 718™ in Laser Powder Bed Fusion Additive Manufacturing. Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, 52(2), 676-688. https://doi.org/10.1007/s11663-020-02040-2

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title = "The Influence of Powder Reuse on the Properties of Nickel Super Alloy ATI 718{\texttrademark} in Laser Powder Bed Fusion Additive Manufacturing",

abstract = "Gas-atomized nickel alloy ATI 718{\texttrademark} powders with a nominal particle distribution of 15 to 45 µm were used in a laser powder bed fusion (LPBF) additive manufacturing (AM) process for ten sequential builds without refreshing with new powder. The repeated feedstock use caused the particle size distribution, particle morphology, and oxygen content to change in comparison to virgin powder. Unusual particle morphologies were observed in the powder with repeated use when compared to virgin gas-atomized feedstock. Particles after use were found to contain surface features such as films and spots, which consisted of aluminum oxides and likely contributed to increasing the oxygen content in the recycled feedstock powder.",

author = "Christopher Rock and Christopher Ledford and Matias Garcia-Avila and Harvey West and Miller, {Victoria M.} and Mark Pankow and Ryan Dehoff and Tim Horn",

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Rock, C, Ledford, C, Garcia-Avila, M, West, H, Miller, VM, Pankow, M, Dehoff, R & Horn, T 2021, 'The Influence of Powder Reuse on the Properties of Nickel Super Alloy ATI 718™ in Laser Powder Bed Fusion Additive Manufacturing', Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, vol. 52, no. 2, pp. 676-688. https://doi.org/10.1007/s11663-020-02040-2

The Influence of Powder Reuse on the Properties of Nickel Super Alloy ATI 718™ in Laser Powder Bed Fusion Additive Manufacturing. / Rock, Christopher; Ledford, Christopher; Garcia-Avila, Matias et al.
In: Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, Vol. 52, No. 2, 04.2021, p. 676-688.

Research output: Contribution to journal › Article › peer-review

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The Influence of Powder Reuse on the Properties of Nickel Super Alloy ATI 718™ in Laser Powder Bed Fusion Additive Manufacturing

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