| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Coules, Harry E.
University of Bristol
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2024Corrosion mechanisms of plasma welded Nickel aluminium bronze immersed in seawatercitations
- 2023The role of corrosion pit topography on stress concentration
- 2023A novel unified constraint parameter based on plastic strain energycitations
- 2022Bending fatigue life evaluation of bridge stay cablescitations
- 2022The Role of Surface Roughness on Pitting Corrosion Initiation in Nickel Aluminium Bronzes in Aircitations
- 2022Investigation into the effects of prior plasticity on creep accumulation in 316H stainless steelcitations
- 2021Compressive fatigue characteristics of octet-truss lattices in different orientationscitations
- 2020Study of residual stress and microstructural evolution in as-deposited and inter-pass rolled wire plus arc additively manufactured Inconel 718 alloy after ageing treatmentcitations
- 2020Effect of crack-like defects on the fracture behaviour of Wire + Arc additively manufactured nickel-base Alloy 718citations
- 2019Fatigue of thin periodic triangular lattice platescitations
- 2019Effects of residual stress and localised strain-hardening on the fracture of ductile materialscitations
- 2017Applying electron backscattering diffraction to macroscopic residual stress characterisation in a dissimilar weldcitations
- 2017Three-dimensional mapping of the residual stress field in a locally rolled aluminium alloy specimencitations
- 2016Interaction of Residual Stresses With Applied Stresses in a Dissimilar Metal Electron Beam Welded Specimencitations
- 2015Comparative study of evolution of residual stress state by local mechanical tensioning and laser processing of ferritic and austenitic structural steel welds.
- 2012Characterising the effects of high-pressure rolling on residual stress in structural steel welds
- 2011Measurement and modelling of the transient thermal-mechanical strain field during GMA welding
Places of action
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conferencepaper
The Role of Surface Roughness on Pitting Corrosion Initiation in Nickel Aluminium Bronzes in Air
Abstract
Nickel Aluminium Bronze (NAB) continues to be used extensively in the marine industry and is most commonly seen in valves and propellers due to its strength and corrosion resistance. However, components used for marine applications often endure long exposure to air during storage periods prior to installation and NAB is vulnerable to pitting corrosion in air. To investigate the potential condition of stored NAB, this study measured the height, width and percentage coverage of corrosion pits observed in NAB samples after 4 months of air exposure at room temperature in a laboratory.<br/><br/>Four different types of NAB samples were considered; off-the-shelf (sample 1a), polished (sample 1b), laser beam welded (sample 1c) and failed in service (samples 2a and 2b) and the microstructure of the samples was characterised using a mixture of microscopic techniques including surface roughness characterisation, SEM, EBSD, EDX and neutron diffraction.<br/><br/>Examples of pitting corrosion were found on each sample type after 4 months of exposure to air. The results show significant correlation between surface roughness of the pre-corroded sample and pitting coverage, and this is thought to be due to the development of crevice corrosion during the 4 months of air exposure. It also highlights the inaccuracies in using Ra values alone to measure surface roughness in samples where localised corrosion pits are suspected due to high surface roughness or long periods of air exposure.<br/><br/>The results of this study bring into question the pitting corrosion that would be found in components that are stored for longer period before being installed onto vessels. This has concerning safety implications as the initial surface characteristics of the metal may influence the residual load-bearing capacity of components.