Effect of Grain Structure on Machinability of LPBF Inconel 718: A Critical Review

Conference paper


Hama, J., Gunputh, U., Lu, Y., Wood, P. and Alvarez, J. 2023. Effect of Grain Structure on Machinability of LPBF Inconel 718: A Critical Review. 20th International Conference on Manufacturing Research, Incorporating the 37th National Conference on Manufacturing Research. IOS Press. https://doi.org/10.3233/ATDE230896
AuthorsHama, J., Gunputh, U., Lu, Y., Wood, P. and Alvarez, J.
TypeConference paper
Abstract

Laser-powder bed fusion LPBF techniques can be used to manufacture complex-shaped, thin-walled, hollow, or slender parts. Although the dimensions of the generated components are close to the final measurements, additional machining processes are required to obtain the desired surface finish and dimensional tolerance. The melt pool dynamic during the LPBF operation results in directional gain structures in alloys. The resulting mechanical properties are strongly dependent on the component build orientation, which can affect the machinability of the produced part. This review paper provides knowledge on the role of microstructure in the machinability of LPBF-produced IN718. The effect of grain shape and distribution, grain boundary density on the surface integrity, and resulting cutting forces are investigated.

KeywordsLaser-powder bed fusion LPBF; engineering ; melt pool dynamic
Year2023
Conference20th International Conference on Manufacturing Research, Incorporating the 37th National Conference on Manufacturing Research
PublisherIOS Press
Digital Object Identifier (DOI)https://doi.org/10.3233/ATDE230896
Web address (URL)https://ebooks.iospress.nl/doi/10.3233/ATDE230896
https://ebooks.iospress.nl/volume/advances-in-manufacturing-technology-xxxvi-proceedings-of-the-20th-international-conference-on-manufacturing-research-incorporating-the-37th-national-conference
Journal citation44, pp. 31-36
ISBN9781643684673
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Online2023
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Deposited24 Jan 2024
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