T. A. Owoseni
Residual Stress Measurement of Suspension HVOF-Sprayed Alumina Coating via a Hole-Drilling Method
Owoseni, T. A.; Bai, M.; Curry, N.; Lester, E. H.; Grant, D. M.; Hussain, T.
Authors
M. Bai
N. Curry
EDWARD LESTER EDWARD.LESTER@NOTTINGHAM.AC.UK
Lady Trent Professor
DAVID GRANT DAVID.GRANT@NOTTINGHAM.AC.UK
Professor of Materials Science
TANVIR HUSSAIN TANVIR.HUSSAIN@NOTTINGHAM.AC.UK
Professor of Coatings and Surface Engineering
Abstract
The nature and magnitude of residual stresses in thermal-sprayed coatings determine their lifetime and failure mechanisms. The residual stresses of suspension high-velocity oxy-fuel (SHVOF) thermal sprayed alumina (Al2O3) coating were measured with hole-drilling and x-ray diffraction. The coating is dense and consists of amorphous and two crystalline phases: alpha and gamma. The residual stresses measured by hole-drilling in the Al2O3 coating was − 162 MPa (compression) in the longitudinal direction and − 104 MPa (compression) in the transverse direction. This is due to the peening stress and the high substrate–coating CTE ratio of ~ 2.1. The nature of the residual stress through the coating is related to the microstructure build-up shown from the cross section and the fracture surfaces of the coating.
Citation
Owoseni, T. A., Bai, M., Curry, N., Lester, E. H., Grant, D. M., & Hussain, T. (2020). Residual Stress Measurement of Suspension HVOF-Sprayed Alumina Coating via a Hole-Drilling Method. Journal of Thermal Spray Technology, 29(6), 1339–1350. https://doi.org/10.1007/s11666-020-01072-z
Journal Article Type | Article |
---|---|
Acceptance Date | Jun 1, 2020 |
Online Publication Date | Jul 29, 2020 |
Publication Date | 2020-08 |
Deposit Date | Aug 4, 2020 |
Publicly Available Date | Aug 4, 2020 |
Journal | Journal of Thermal Spray Technology |
Print ISSN | 1059-9630 |
Electronic ISSN | 1544-1016 |
Publisher | Springer Verlag |
Peer Reviewed | Peer Reviewed |
Volume | 29 |
Issue | 6 |
Pages | 1339–1350 |
DOI | https://doi.org/10.1007/s11666-020-01072-z |
Keywords | Materials Chemistry; Surfaces, Coatings and Films; Condensed Matter Physics |
Public URL | https://nottingham-repository.worktribe.com/output/4811387 |
Publisher URL | https://link.springer.com/article/10.1007/s11666-020-01072-z |
Files
Residual Stress Measurement
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Publisher Licence URL
https://creativecommons.org/licenses/by/4.0/
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