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Effect of heat treatment on fatigue crack growth in multiple material layered IN718/316L structure fabricated by laser powder bed fusion

Effect of heat treatment on fatigue crack growth in multiple material layered IN718/316L structure fabricated by laser powder bed fusion
Effect of heat treatment on fatigue crack growth in multiple material layered IN718/316L structure 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).
0142-1123
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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Duval-Chaneac, Marie-Salome, Dani
3d3f174e-675c-4204-a1c4-a5edc379390d
Gao, Nong
9c1370f7-f4a9-4109-8a3a-4089b3baec21
Khan, R.H.U
b2ab6943-516b-41b6-9028-bce4a69b3bc5
Giles, Michael
aac8af59-de52-4f82-9968-f2a5d9d1f5ee
Georgilas, K.
b3beb7da-6b40-45cd-af8a-177bcb299350
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 multiple material layered IN718/316L structure fabricated by laser powder bed fusion. International Journal of Fatigue, 160. (doi:10.1016/j.ijfatigue.2022.106852).

Record type: Article

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
Restricted to Repository staff only until 22 March 2024.
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Accepted/In Press date: 10 March 2022
Published date: 22 March 2022

Identifiers

Local EPrints ID: 468332
URI: http://eprints.soton.ac.uk/id/eprint/468332
ISSN: 0142-1123
PURE UUID: 6be57396-b69e-40f8-a81a-2e7b627eff3e
ORCID for Nong Gao: ORCID iD orcid.org/0000-0002-7430-0319
ORCID for Xiao Zhao: ORCID iD orcid.org/0000-0002-9714-3176
ORCID for Philippa Reed: ORCID iD orcid.org/0000-0002-2258-0347

Catalogue record

Date deposited: 10 Aug 2022 18:10
Last modified: 11 Aug 2022 01:53

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Contributors

Author: Marie-Salome, Dani Duval-Chaneac
Author: Nong Gao ORCID iD
Author: R.H.U Khan
Author: Michael Giles
Author: K. Georgilas
Author: Xiao Zhao ORCID iD
Author: Philippa Reed ORCID iD

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