Investigating the fatigue performance of soft multilayer coatings with varying locations of an intermetallic interlayer

Songsong Lu; Richard Cook; Yi Zhang; Philippa Reed

doi:10.1016/j.ijfatigue.2020.106130

Investigating the fatigue performance of soft multilayer coatings with varying locations of an intermetallic interlayer

Songsong Lu^*
, Richard Cook
, Yi Zhang
, Philippa Reed

^*Corresponding author for this work

University of Southampton
European Technical Centre (UK)

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

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.

Original language	English
Article number	106130
Journal	International Journal of Fatigue
Volume	145
DOIs	https://doi.org/10.1016/j.ijfatigue.2020.106130
State	Published - Apr 2021
Externally published	Yes

Keywords

Coatings
Crack morphology
Electroplating
Fatigue
Multilayer

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10.1016/j.ijfatigue.2020.106130

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title = "Investigating the fatigue performance of soft multilayer coatings with varying locations of an intermetallic interlayer",

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.",

keywords = "Coatings, Crack morphology, Electroplating, Fatigue, Multilayer",

author = "Songsong Lu and Richard Cook and Yi Zhang and Philippa Reed",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2021",

month = apr,

doi = "10.1016/j.ijfatigue.2020.106130",

language = "英语",

volume = "145",

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AU - Lu, Songsong

AU - Cook, Richard

AU - Zhang, Yi

AU - Reed, Philippa

PY - 2021/4

Y1 - 2021/4

N2 - 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.

AB - 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.

KW - Coatings

KW - Crack morphology

KW - Electroplating

KW - Fatigue

KW - Multilayer

UR - https://www.scopus.com/pages/publications/85098966180

U2 - 10.1016/j.ijfatigue.2020.106130

DO - 10.1016/j.ijfatigue.2020.106130

M3 - 文章

AN - SCOPUS:85098966180

SN - 0142-1123

VL - 145

JO - International Journal of Fatigue

JF - International Journal of Fatigue

M1 - 106130

ER -

Investigating the fatigue performance of soft multilayer coatings with varying locations of an intermetallic interlayer

Abstract

Keywords

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