The University of Southampton
University of Southampton Institutional Repository

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
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
0142-1123
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
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 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).

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.
Request a copy

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
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: 19 Dec 2023 02:39

Export record

Altmetrics

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

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×