| 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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Burnett, Tl
University of Manchester
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (28/28 displayed)
- 2024Exploration of fs-laser ablation parameter space for 2D/3D imaging of soft and hard materials by tri-beam microscopycitations
- 2024Damage evolution in multilayer braided composite tubes under torsion studied by in-situ X-ray Computed Tomography (CT)
- 2024The role of cavitation in the toughening of elastomer nanocomposites reinforced with graphene nanoplateletscitations
- 2023Computational study of the geometrical influence of grain topography on short crack propagation in AA7XXX series alloyscitations
- 2023In situ observation of environmentally assisted crack initiation and short crack growth behaviour of new-generation 7xxx series alloys in humid aircitations
- 2022Large-scale serial sectioning of environmentally assisted cracks in 7xxx Al alloys using femtosecond Laser-PFIBcitations
- 2022Embedded 3D printing of Multi-material composites
- 2022Tailoring the microstructure of lamellar Ti3C2Tx MXene aerogel by compressive strainingcitations
- 2021X-ray Tomographic Observation of Environmental Assisted Cracking in Heat-treated Lean Duplex Stainless Steelcitations
- 2021Multiscale analysis of grain boundary microstructure in high strength 7xxx Al alloyscitations
- 2020Environmentally induced crack (EIC) initiation, propagation, and failure: A 3D in-situ time-lapse study of AA5083 H131citations
- 2020Redistribution of carbon caused by butterfly defects in bearing steelscitations
- 2020Tracking polycrystal evolution non-destructively in 3D by laboratory X-ray diffraction contrast tomographycitations
- 2020X-Ray Tomographic Characterisation of Pitting Corrosion in Lean Duplex Stainless Steelcitations
- 2019On the application of Xe+ plasma FIB for micro-fabrication of small-scale tensile specimenscitations
- 2019Initiation and short crack growth behaviour of environmentally induced cracks in AA5083 H131 investigated across time and length scalescitations
- 2019Completing the picture through correlative characterizationcitations
- 2018Atomic-Scale Insights into the Oxidation of Aluminumcitations
- 2018Multi-Modal Plasma Focused Ion Beam Serial Section Tomography of an Organic Paint Coatingcitations
- 2018Ductile Fracture Assessment of 304L Stainless Steel Using 3D X-ray Computed Tomographycitations
- 2018Realizing the theoretical stiffness of graphene in composites through confinement between carbon fiberscitations
- 2017Degradation of metallic materials studied by correlative tomographycitations
- 2017Time-lapse lab-based X-ray nano-CT study of corrosion damagecitations
- 2017Multiscale correlative tomography: an investigation of creep cavitation in 316 stainless steelcitations
- 2016Xe+ Plasma FIB: 3D Microstructures from Nanometers to Hundreds of Micrometerscitations
- 2015Large volume serial section tomography by Xe Plasma FIB dual beam microscopycitations
- 2014Correlative tomographycitations
- 2013Simultaneous measurement of X-ray powder diffraction and ferroelectric polarisation data as a function of applied electric field at a range of frequenciescitations
Places of action
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article
Redistribution of carbon caused by butterfly defects in bearing steels
Abstract
Butterfly defects initiate from inclusions in the subsurface of steel bearing components subject to rolling contact. The white etching matter (WEM) microstructure is a characteristic of butterflies and is related to the dissolution of carbides and thus generally believed to be enriched with carbon, in supersaturated solid solution, relative to the parent microstructure. Here, several butterflies are investigated using wavelength dispersive spectroscopy (WDS), soft x-ray emission spectroscopy (SXES) and electron microscopy (EM). Contrary to established thinking, in all cases investigated the butterflyneighbouring WEM was found to be depleted in carbon, relative to parent material, by around 27% (measured in counts). Furthermore, the carbon level was shown to be lower than the matrix itself, suggesting that solute carbon is also expelled from the WEM during its formation due to the low level of solubility of carbon in ferrite. This was observed in both AISI 52100 and 18NiCrMo14-6 bearing steels and it is suggested to be due to the low solubility of carbon in ferrite. In spite of this, nano-indentation found that WEM in both alloys was ~17% harder than the parent material. This may explain the strings of micro-voids observed near the WEM-parent interface, which appear to play a role in the growth of the butterfly cracks. It is suggested that the increased hardness of the WEM is mainly due to microstructural changes, rather changes in solute carbon concentration.<br/> <br/>