Alloys-by-design: Application to new superalloys for additive manufacturing

Yuanbo T. Tang; Chinnapat Panwisawas; Joseph N. Ghoussoub; Yilun Gong; John W.G. Clark; Andre A.N. Nemeth; D. Graham McCartney; Roger C. Reed

doi:10.1016/j.actamat.2020.09.023

Alloys-by-design: Application to new superalloys for additive manufacturing

Yuanbo T. Tang, Chinnapat Panwisawas, Joseph N. Ghoussoub, Yilun Gong, John W.G. Clark, Andre A.N. Nemeth, D. Graham McCartney, Roger C. Reed^*

^*Corresponding author for this work

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Abstract

New grades of γ/γ′ nickel-based superalloy for the additive manufacturing process are designed using computational approaches. Account is taken of the need to avoid defect formation via solidification and solid-state cracking. Processing trials are carried out using powder-based selective laser melting, comparing with the heritage alloys IN939 and CM247LC. Microstructural characterisation, calorimetry and hot tensile testing are used to assess the approach employed. The superior processability and mechanical behaviour of the new alloys are demonstrated. Suggestions are made for refinements to the modelling approach.

Original language	English
Pages (from-to)	417-436
Number of pages	20
Journal	Acta Materialia
Volume	202
Early online date	11 Sept 2020
DOIs	https://doi.org/10.1016/j.actamat.2020.09.023
Publication status	Published - 1 Jan 2021

Bibliographical note

Acknowledgments:
The authors acknowledge funding from Innovate UK, formerly the Technology Strategy Board (TSB), under project number 104047, and specifically the Materials and Manufacturing Division. They appreciate inspiring discussions with Dr. Ravi Aswathanarayanaswamy of Renishaw plc. Helpful comments from Dr. Jitendra Patel and Dr. Robin Wilson of Innovate UK are acknowledged. C.P. would like to acknowledge the funding from Innovation Fellowship funded by Engineering and Physical Science Research Council (EPSRC), UK Research and Innovation, under the grant number: EP/S000828/1.

Keywords

Alloys-By-Design
Additive Manufacturing
Selective laser melting
Nickel-based superalloys
Cracking mechanisms
Micromechanics

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TangY2020AlloysFinal published version, 13.4 MBLicence: Creative Commons: Attribution (CC BY)

Cite this

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title = "Alloys-by-design: Application to new superalloys for additive manufacturing",

abstract = "New grades of γ/γ′ nickel-based superalloy for the additive manufacturing process are designed using computational approaches. Account is taken of the need to avoid defect formation via solidification and solid-state cracking. Processing trials are carried out using powder-based selective laser melting, comparing with the heritage alloys IN939 and CM247LC. Microstructural characterisation, calorimetry and hot tensile testing are used to assess the approach employed. The superior processability and mechanical behaviour of the new alloys are demonstrated. Suggestions are made for refinements to the modelling approach.",

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author = "Tang, {Yuanbo T.} and Chinnapat Panwisawas and Ghoussoub, {Joseph N.} and Yilun Gong and Clark, {John W.G.} and Nemeth, {Andre A.N.} and McCartney, {D. Graham} and Reed, {Roger C.}",

note = "Acknowledgments: The authors acknowledge funding from Innovate UK, formerly the Technology Strategy Board (TSB), under project number 104047, and specifically the Materials and Manufacturing Division. They appreciate inspiring discussions with Dr. Ravi Aswathanarayanaswamy of Renishaw plc. Helpful comments from Dr. Jitendra Patel and Dr. Robin Wilson of Innovate UK are acknowledged. C.P. would like to acknowledge the funding from Innovation Fellowship funded by Engineering and Physical Science Research Council (EPSRC), UK Research and Innovation, under the grant number: EP/S000828/1.",

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journal = "Acta Materialia",

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AU - Tang, Yuanbo T.

AU - Panwisawas, Chinnapat

AU - Ghoussoub, Joseph N.

AU - Gong, Yilun

AU - Clark, John W.G.

AU - Nemeth, Andre A.N.

AU - McCartney, D. Graham

AU - Reed, Roger C.

N1 - Acknowledgments: The authors acknowledge funding from Innovate UK, formerly the Technology Strategy Board (TSB), under project number 104047, and specifically the Materials and Manufacturing Division. They appreciate inspiring discussions with Dr. Ravi Aswathanarayanaswamy of Renishaw plc. Helpful comments from Dr. Jitendra Patel and Dr. Robin Wilson of Innovate UK are acknowledged. C.P. would like to acknowledge the funding from Innovation Fellowship funded by Engineering and Physical Science Research Council (EPSRC), UK Research and Innovation, under the grant number: EP/S000828/1.

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N2 - New grades of γ/γ′ nickel-based superalloy for the additive manufacturing process are designed using computational approaches. Account is taken of the need to avoid defect formation via solidification and solid-state cracking. Processing trials are carried out using powder-based selective laser melting, comparing with the heritage alloys IN939 and CM247LC. Microstructural characterisation, calorimetry and hot tensile testing are used to assess the approach employed. The superior processability and mechanical behaviour of the new alloys are demonstrated. Suggestions are made for refinements to the modelling approach.

AB - New grades of γ/γ′ nickel-based superalloy for the additive manufacturing process are designed using computational approaches. Account is taken of the need to avoid defect formation via solidification and solid-state cracking. Processing trials are carried out using powder-based selective laser melting, comparing with the heritage alloys IN939 and CM247LC. Microstructural characterisation, calorimetry and hot tensile testing are used to assess the approach employed. The superior processability and mechanical behaviour of the new alloys are demonstrated. Suggestions are made for refinements to the modelling approach.

KW - Alloys-By-Design

KW - Additive Manufacturing

KW - Selective laser melting

KW - Nickel-based superalloys

KW - Cracking mechanisms

KW - Micromechanics

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SP - 417

EP - 436

JO - Acta Materialia

JF - Acta Materialia

ER -

Alloys-by-design: Application to new superalloys for additive manufacturing

Abstract

Bibliographical note

Keywords

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