Eutectic superalloys for laser powder bed fusion

Christofidou, K.A. orcid.org/0000-0002-8064-5874, Wilson, A.S., Markanday, J.F.S. et al. (6 more authors) (2024) Eutectic superalloys for laser powder bed fusion. In: Superalloys 2024: Proceedings of the 15th International Symposium on Superalloys. 15th International Symposium on Superalloys, 08-12 Sep 2024, Champion, Pennsylvania, USA. The Minerals, Metals & Materials Series . Springer Nature Switzerland , pp. 860-870. ISBN 9783031639364

Abstract

Due to the small freezing range of eutectic alloys, the Cotac-type alloys might be viable alternatives to conventional Ni-based superalloysNi- based superalloy when processed through additive manufacturingAdditive manufacturing. Laser pass assessment reveals that both Cotac-74 and Cotac-744 display improved crackingCracking resistance when compared to the conventional Ni-based superalloyNi- based superalloy CM247LC. During laser powder bed fusionLaser Powder Bed Fusion (LPBF) Cotac-74 displayed the highest crackingCracking resistance, with no microcracking detected in the as-built or heat-treated microstructureMicrostructure. The promising results presented for Cotac-74 highlight the possible use of this alloy for the additive manufacturingAdditive manufacturingof high-temperatureHigh-temperature aerospace components.

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Item Type:	Proceedings Paper
Authors/Creators:	Christofidou, K.A. https://orcid.org/0000-0002-8064-5874 Wilson, A.S. Markanday, J.F.S. Pickering, E.J. Church, N.L. Miller, J.R. Jones, N.G. Jones, C.N. Stone, H.J.
Copyright, Publisher and Additional Information:	© 2024 The Authors. Except as otherwise noted, this author-accepted version of a journal article published in Superalloys 2024: Proceedings of the 15th International Symposium on Superalloys is made available via the University of Sheffield Research Publications and Copyright Policy under the terms of the Creative Commons Attribution 4.0 International License (CC-BY 4.0), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/
Keywords:	Nickel alloys; Laser powder bed fusion; Electron microscopy; In-situ composites; Additive manufacturing
Dates:	Published: 21 August 2024 Published (online): 21 August 2024
Institution:	The University of Sheffield
Academic Units:	The University of Sheffield > Faculty of Engineering (Sheffield) > School of Chemical, Materials and Biological Engineering
Depositing User:	Symplectic Sheffield
Date Deposited:	17 Jan 2025 11:42
Last Modified:	17 Jan 2025 11:56
Status:	Published
Publisher:	Springer Nature Switzerland
Series Name:	The Minerals, Metals & Materials Series
Refereed:	Yes
Identification Number:	10.1007/978-3-031-63937-1_80
Related URLs:	Author Conference
Open Archives Initiative ID (OAI ID):	oai:eprints.whiterose.ac.uk:221825

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Eutectic superalloys for laser powder bed fusion

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