GRCop-42: Comparison between laser powder bed fusion and laser powder direct energy deposition

Gabriel Demeneghi; Paul Gradl; Jason R. Mayeur; Kavan Hazeli

doi:10.1016/j.addlet.2024.100224

GRCop-42: Comparison between laser powder bed fusion and laser powder direct energy deposition

Gabriel Demeneghi
, Paul Gradl
, Jason R. Mayeur
, Kavan Hazeli

Deposition Science and Technology

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

27 Scopus citations

Abstract

This study involves a comparative analysis of additively manufactured GRCop-42 specimens produced using two processes: laser-powder bed fusion (L-PBF) and laser powder direct energy deposition (LP-DED). The investigation characterizes a range of material attributes, including surface topography, internal defects, microstructural features, quasi-static mechanical properties, and fractographic characteristics. The findings demonstrate that, despite the specimens being fabricated with the same base material, the resulting material properties vary significantly between the two additive manufacturing processes. As such, material properties cannot be presumed to be uniform across different manufacturing methods. Consequently, material characterization must be conducted for individual manufacturing processes based on specific parameters.

Original language	English
Article number	100224
Journal	Additive Manufacturing Letters
Volume	10
DOIs	https://doi.org/10.1016/j.addlet.2024.100224
State	Published - Jul 2024

Funding

The authors would like to thank Baxter Barnes from NASA MSFC for his assistance with mechanical testing, and Daniel June from the University of Arizona for his assistance with porosity analysis. Additionally, the authors would like to express their gratitude to John Fikes from Marshall Space Flight Center and the Rapid Analysis and Manufacturing Propulsion Technology (RAMPT) project for supporting this work. Notice: This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan )

Keywords

Copper alloy
GRCop-42
L-PBF
LP-DED
Microstructure
Porosity
Surface topography
Tensile testing
Texture

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10.1016/j.addlet.2024.100224

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title = "GRCop-42: Comparison between laser powder bed fusion and laser powder direct energy deposition",

abstract = "This study involves a comparative analysis of additively manufactured GRCop-42 specimens produced using two processes: laser-powder bed fusion (L-PBF) and laser powder direct energy deposition (LP-DED). The investigation characterizes a range of material attributes, including surface topography, internal defects, microstructural features, quasi-static mechanical properties, and fractographic characteristics. The findings demonstrate that, despite the specimens being fabricated with the same base material, the resulting material properties vary significantly between the two additive manufacturing processes. As such, material properties cannot be presumed to be uniform across different manufacturing methods. Consequently, material characterization must be conducted for individual manufacturing processes based on specific parameters.",

keywords = "Copper alloy, GRCop-42, L-PBF, LP-DED, Microstructure, Porosity, Surface topography, Tensile testing, Texture",

author = "Gabriel Demeneghi and Paul Gradl and Mayeur, \{Jason R.\} and Kavan Hazeli",

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language = "English",

volume = "10",

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PY - 2024/7

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AB - This study involves a comparative analysis of additively manufactured GRCop-42 specimens produced using two processes: laser-powder bed fusion (L-PBF) and laser powder direct energy deposition (LP-DED). The investigation characterizes a range of material attributes, including surface topography, internal defects, microstructural features, quasi-static mechanical properties, and fractographic characteristics. The findings demonstrate that, despite the specimens being fabricated with the same base material, the resulting material properties vary significantly between the two additive manufacturing processes. As such, material properties cannot be presumed to be uniform across different manufacturing methods. Consequently, material characterization must be conducted for individual manufacturing processes based on specific parameters.

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KW - Porosity

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KW - Tensile testing

KW - Texture

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GRCop-42: Comparison between laser powder bed fusion and laser powder direct energy deposition

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