Investigating the fatigue performance of soft multilayer coatings with varying locations of an intermetallic interlayer
Investigating the fatigue performance of soft multilayer coatings with varying locations of an intermetallic interlayer
A multilayer coating system containing two hard intermetallic layers (IMLs) within a soft metallic system provides improved fatigue performance. To further optimise this system, various coatings with different locations of the intermediate intermetallic (IML-Top) interlayer were manufactured and experimentally investigated. Their characteristics were assessed and fatigue performances were compared, revealing the improvement of fatigue resistance by locating the IML-Top layer close to the top overlay coating surface. The mechanisms, based on post-test observations of crack morphology, are identified as (1) improved retardation of crack initiation and (2) improved crack growth resistance provided by the shielding effect of the IML-Top layer.
Coatings, Crack morphology, Electroplating, Fatigue, Multilayer
Lu, Songsong
179a342f-28f8-4181-8767-f5be79806578
Cook, Richard
06f8322d-81be-4f82-9326-19e55541c78f
Reed, Philippa
8b79d87f-3288-4167-bcfc-c1de4b93ce17
Zhang, Yi
34089853-d472-4945-be54-a895e8852662
Lu, Songsong
179a342f-28f8-4181-8767-f5be79806578
Cook, Richard
06f8322d-81be-4f82-9326-19e55541c78f
Reed, Philippa
8b79d87f-3288-4167-bcfc-c1de4b93ce17
Zhang, Yi
34089853-d472-4945-be54-a895e8852662
Lu, Songsong, Cook, Richard, Reed, Philippa and Zhang, Yi
(2020)
Investigating the fatigue performance of soft multilayer coatings with varying locations of an intermetallic interlayer.
International Journal of Fatigue, 145, [106130].
(doi:10.1016/j.ijfatigue.2020.106130).
Abstract
A multilayer coating system containing two hard intermetallic layers (IMLs) within a soft metallic system provides improved fatigue performance. To further optimise this system, various coatings with different locations of the intermediate intermetallic (IML-Top) interlayer were manufactured and experimentally investigated. Their characteristics were assessed and fatigue performances were compared, revealing the improvement of fatigue resistance by locating the IML-Top layer close to the top overlay coating surface. The mechanisms, based on post-test observations of crack morphology, are identified as (1) improved retardation of crack initiation and (2) improved crack growth resistance provided by the shielding effect of the IML-Top layer.
Text
Version of Record
- Version of Record
Restricted to Repository staff only
Request a copy
More information
Accepted/In Press date: 24 December 2020
e-pub ahead of print date: 30 December 2020
Keywords:
Coatings, Crack morphology, Electroplating, Fatigue, Multilayer
Identifiers
Local EPrints ID: 449974
URI: http://eprints.soton.ac.uk/id/eprint/449974
ISSN: 0142-1123
PURE UUID: 678738b6-29d5-4820-9419-7200ffa58729
Catalogue record
Date deposited: 01 Jul 2021 16:30
Last modified: 25 Jul 2024 01:42
Export record
Altmetrics
Contributors
Author:
Songsong Lu
Author:
Yi Zhang
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
