Effect of heat treatment on fatigue crack growth in IN718/316L multiple-materials layered structures fabricated by laser powder bed fusion
Effect of heat treatment on fatigue crack growth in IN718/316L multiple-materials layered structures fabricated by laser powder bed fusion
Multi-material specimens of 316L stainless steel and IN718 were produced in a layered architecture by the Laser Powder Bed Fusion (L-PBF) process. Specimens were heat treated at temperatures tailored for the combination of 316L and IN718. The effect of the heat treatment on the microstructure and on the tensile properties across the layers was investigated. Two heat-treated bi-layer specimens (No.1 and No.2) and one heat-treated 4-layer specimen (No.3) were tested under 3 point bending fatigue to compare the crack propagation resistance through multiple sets of dissimilar material interfaces. It was found that the crack propagation resistance overall is mainly controlled by the local microstructural strength, while the interface transition is most significant at lower values of stress intensity factor range (ΔK < 20 MPa√m).
Crack growth rate, Heat treatment, Interface, Laser powder bed fusion, Multi-materials
Duval-Chaneac, Marie-Salome, Dani
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Gao, Nong
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Khan, R.H.U
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Giles, Michael
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Georgilas, K.
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Zhao, Xiao
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Reed, Philippa
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1 July 2022
Duval-Chaneac, Marie-Salome, Dani
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Gao, Nong
9c1370f7-f4a9-4109-8a3a-4089b3baec21
Khan, R.H.U
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Giles, Michael
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Georgilas, K.
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Zhao, Xiao
70e12f26-5ece-46cd-a186-3cac70e99a6f
Reed, Philippa
8b79d87f-3288-4167-bcfc-c1de4b93ce17
Duval-Chaneac, Marie-Salome, Dani, Gao, Nong, Khan, R.H.U, Giles, Michael, Georgilas, K., Zhao, Xiao and Reed, Philippa
(2022)
Effect of heat treatment on fatigue crack growth in IN718/316L multiple-materials layered structures fabricated by laser powder bed fusion.
International Journal of Fatigue, 160 (7), [106852].
(doi:10.1016/j.ijfatigue.2022.106852).
Abstract
Multi-material specimens of 316L stainless steel and IN718 were produced in a layered architecture by the Laser Powder Bed Fusion (L-PBF) process. Specimens were heat treated at temperatures tailored for the combination of 316L and IN718. The effect of the heat treatment on the microstructure and on the tensile properties across the layers was investigated. Two heat-treated bi-layer specimens (No.1 and No.2) and one heat-treated 4-layer specimen (No.3) were tested under 3 point bending fatigue to compare the crack propagation resistance through multiple sets of dissimilar material interfaces. It was found that the crack propagation resistance overall is mainly controlled by the local microstructural strength, while the interface transition is most significant at lower values of stress intensity factor range (ΔK < 20 MPa√m).
Text
4-M Daval-Chaneac International Journal of Fatigue 160 106852 2022
- Accepted Manuscript
More information
Accepted/In Press date: 10 March 2022
Published date: 1 July 2022
Additional Information:
Funding Information:
This study was made possible thanks to the Centre for Doctoral Training in Sustainable Infrastructure System (CDT-SIS) funded by the Engineering and Physical Sciences Research Council (EPSRC) and the National Structural Integrity Research Centre (NSIRC), by funding this PhD program hosted by both the University of Southampton and The Welding Institute (TWI) of Cambridge. The associated grant reference is the EP/L01582X/1. M-S D-C is grateful for funding from the Lloyd's Register Foundation, a charitable foundation helping protect life and property by supporting engineering-related education, public engagement, and the application of research. All data supporting this study are openly available from the University of Southampton repository at https://doi.org/10.5258/SOTON/D2099
Funding Information:
This study was made possible thanks to the Centre for Doctoral Training in Sustainable Infrastructure System (CDT-SIS) funded by the Engineering and Physical Sciences Research Council (EPSRC) and the National Structural Integrity Research Centre (NSIRC), by funding this PhD program hosted by both the University of Southampton and The Welding Institute (TWI) of Cambridge. The associated grant reference is the EP/L01582X/1. M-S D-C is grateful for funding from the Lloyd’s Register Foundation, a charitable foundation helping protect life and property by supporting engineering-related education, public engagement, and the application of research.
Publisher Copyright:
© 2022 Elsevier Ltd
Keywords:
Crack growth rate, Heat treatment, Interface, Laser powder bed fusion, Multi-materials
Identifiers
Local EPrints ID: 468332
URI: http://eprints.soton.ac.uk/id/eprint/468332
ISSN: 0142-1123
PURE UUID: 6be57396-b69e-40f8-a81a-2e7b627eff3e
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Date deposited: 10 Aug 2022 18:10
Last modified: 06 Jun 2024 04:19
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Contributors
Author:
Marie-Salome, Dani Duval-Chaneac
Author:
R.H.U Khan
Author:
Michael Giles
Author:
K. Georgilas
Author:
Xiao Zhao
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