Eutectic Superalloys for Laser Powder Bed Fusion

K. A. Christofidou; A. S. Wilson; J. F. S. Markanday; E. J. Pickering; N. L. Church; J. R. Miller; N. G. Jones; C. N. Jones; H. J. Stone

doi:10.1007/978-3-031-63937-1_80

Eutectic Superalloys for Laser Powder Bed Fusion

K. A. Christofidou, A. S. Wilson, J. F. S. Markanday, E. J. Pickering, N. L. Church, J. R. Miller, N. G. Jones, C. N. Jones, H. J. Stone

Materials Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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Abstract

Due to the small freezing range of eutectic alloys, the Cotac-type alloys might be viable alternatives to conventional Ni-based superalloys when processed through additive manufacturing. Laser-pass assessment reveals that both Cotac-74 and Cotac-744 display improved cracking resistance when compared to the conventional Ni-based superalloy CM247LC. During laser powder bed fusion Cotac-74 displayed the highest cracking resistance, with no microcracking detected in the as-built or heat-treated microstructure. The promising results presented for Cotac-74 highlight the possible use of this alloy for the additive manufacturing of high-temperature aerospace components.

Original language	English
Title of host publication	Superalloys 2024
Publisher	Springer Cham
Chapter	80
Pages	860-870
ISBN (Electronic)	978-3-031-63937-1
ISBN (Print)	978-3-031-63936-4
DOIs	https://doi.org/10.1007/978-3-031-63937-1_80
Publication status	Published - 21 Aug 2024

Keywords

nickel alloys
laser methods
electron microscopy
in-situ composites
additive manufacturing
other

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10.1007/978-3-031-63937-1_80

Eutectic Superalloys for Laser Powder Bed Fus_Edward PickeringAccepted author manuscript, 1.5 MBLicence: CC BY

Cite this

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title = "Eutectic Superalloys for Laser Powder Bed Fusion",

abstract = "Due to the small freezing range of eutectic alloys, the Cotac-type alloys might be viable alternatives to conventional Ni-based superalloys when processed through additive manufacturing. Laser-pass assessment reveals that both Cotac-74 and Cotac-744 display improved cracking resistance when compared to the conventional Ni-based superalloy CM247LC. During laser powder bed fusion Cotac-74 displayed the highest cracking resistance, with no microcracking detected in the as-built or heat-treated microstructure. The promising results presented for Cotac-74 highlight the possible use of this alloy for the additive manufacturing of high-temperature aerospace components. ",

keywords = "nickel alloys, laser methods, electron microscopy, in-situ composites, additive manufacturing, other",

author = "Christofidou, {K. A.} and Wilson, {A. S.} and Markanday, {J. F. S.} and Pickering, {E. J.} and Church, {N. L.} and Miller, {J. R.} and Jones, {N. G.} and Jones, {C. N.} and Stone, {H. J.}",

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doi = "10.1007/978-3-031-63937-1_80",

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AU - Christofidou, K. A.

AU - Wilson, A. S.

AU - Markanday, J. F. S.

AU - Pickering, E. J.

AU - Church, N. L.

AU - Miller, J. R.

AU - Jones, N. G.

AU - Jones, C. N.

AU - Stone, H. J.

PY - 2024/8/21

Y1 - 2024/8/21

N2 - Due to the small freezing range of eutectic alloys, the Cotac-type alloys might be viable alternatives to conventional Ni-based superalloys when processed through additive manufacturing. Laser-pass assessment reveals that both Cotac-74 and Cotac-744 display improved cracking resistance when compared to the conventional Ni-based superalloy CM247LC. During laser powder bed fusion Cotac-74 displayed the highest cracking resistance, with no microcracking detected in the as-built or heat-treated microstructure. The promising results presented for Cotac-74 highlight the possible use of this alloy for the additive manufacturing of high-temperature aerospace components.

AB - Due to the small freezing range of eutectic alloys, the Cotac-type alloys might be viable alternatives to conventional Ni-based superalloys when processed through additive manufacturing. Laser-pass assessment reveals that both Cotac-74 and Cotac-744 display improved cracking resistance when compared to the conventional Ni-based superalloy CM247LC. During laser powder bed fusion Cotac-74 displayed the highest cracking resistance, with no microcracking detected in the as-built or heat-treated microstructure. The promising results presented for Cotac-74 highlight the possible use of this alloy for the additive manufacturing of high-temperature aerospace components.

KW - nickel alloys

KW - laser methods

KW - electron microscopy

KW - in-situ composites

KW - additive manufacturing

KW - other

U2 - 10.1007/978-3-031-63937-1_80

DO - 10.1007/978-3-031-63937-1_80

M3 - Conference contribution

SN - 978-3-031-63936-4

SP - 860

EP - 870

BT - Superalloys 2024

PB - Springer Cham

ER -

Eutectic Superalloys for Laser Powder Bed Fusion

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Keywords

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